1,109 images for thinking hard

  • Businesswoman studying charts and graphs on wall in office Stock Photo - Premium Royalty-Free, Code: 6113-07242188

    6113-07242188

    Businesswoman studying charts and graphs on wall in office

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  • Man drawing architectural plans on glass wall Stock Photo - Premium Royalty-Free, Code: 649-07238405

    649-07238405

    Man drawing architectural plans on glass wall

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  • Business. A Woman Sitting Relaxing, With Her Chin On Her Hand. Stock Photo - Premium Royalty-Free, Code: 6118-07122607

    6118-07122607

    Business. A Woman Sitting Relaxing, With Her Chin On Her Hand.

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  • Close up of man's frustrated face Stock Photo - Premium Royalty-Free, Code: 614-06625140

    614-06625140

    Close up of man's frustrated face

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  • Businessman in wrist brace with pencil Stock Photo - Premium Royalty-Free, Code: 649-06112665

    649-06112665

    Businessman in wrist brace with pencil

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  • Woman with sticky notes on face Stock Photo - Premium Royalty-Free, Code: 649-06717829

    649-06717829

    Woman with sticky notes on face

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  • Close-up of young woman using laptop computer, looking confused, studio shot Stock Photo - Premium Royalty-Free, Code: 600-07311601

    600-07311601

    Close-up of young woman using laptop computer, looking confused, studio shot

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  • Business people standing next to office chair installation art Stock Photo - Premium Royalty-Free, Code: 6113-07242226

    6113-07242226

    Business people standing next to office chair installation art

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  • Conceptual image of man as cog in the wheel Stock Photo - Premium Royalty-Free, Code: 614-06898247

    614-06898247

    Conceptual image of man as cog in the wheel

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  • Businessman looking at graphs and charts on glass wall in office Stock Photo - Premium Royalty-Free, Code: 6113-07242143

    6113-07242143

    Businessman looking at graphs and charts on glass wall in office

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  • Businesswoman examining office chair installation art Stock Photo - Premium Royalty-Free, Code: 6113-07242215

    6113-07242215

    Businesswoman examining office chair installation art

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  • Man admiring mountain view Stock Photo - Premium Royalty-Free, Code: 649-03858396

    649-03858396

    Man admiring mountain view

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  • Businessman examining office chair installation art Stock Photo - Premium Royalty-Free, Code: 6113-07242194

    6113-07242194

    Businessman examining office chair installation art

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  • Woman looking at pills in hand Stock Photo - Premium Royalty-Free, Code: 6113-07242595

    6113-07242595

    Woman looking at pills in hand

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  • Businessman examining paint swatches Stock Photo - Premium Royalty-Free, Code: 649-06532579

    649-06532579

    Businessman examining paint swatches

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  • Businessman viewing office chair installation art Stock Photo - Premium Royalty-Free, Code: 6113-07242130

    6113-07242130

    Businessman viewing office chair installation art

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  • University student reading in classroom Stock Photo - Premium Royalty-Free, Code: 6113-07243394

    6113-07243394

    University student reading in classroom

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  • Business people examining paint swatches Stock Photo - Premium Royalty-Free, Code: 649-06532588

    649-06532588

    Business people examining paint swatches

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  • Men admiring mountain view Stock Photo - Premium Royalty-Free, Code: 649-03858385

    649-03858385

    Men admiring mountain view

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  • Worker standing on road in quarry Stock Photo - Premium Royalty-Free, Code: 6113-06625879

    6113-06625879

    Worker standing on road in quarry

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  • Close up of businessman thinking Stock Photo - Premium Royalty-Free, Code: 649-06352702

    649-06352702

    Close up of businessman thinking

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  • Senior woman doing sudoku puzzles Stock Photo - Premium Royalty-Free, Code: 614-05792308

    614-05792308

    Senior woman doing sudoku puzzles

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  • Close-up Portrait of Young Boy at Playground Stock Photo - Premium Royalty-Free, Code: 600-05786422

    600-05786422

    Close-up Portrait of Young Boy at Playground

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  • Teenage girl thinking with chin in hand Stock Photo - Premium Royalty-Free, Code: 614-06623502

    614-06623502

    Teenage girl thinking with chin in hand

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  • Close up of woman leaning on window Stock Photo - Premium Royalty-Free, Code: 649-05801177

    649-05801177

    Close up of woman leaning on window

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  • Businesswoman looking out office window Stock Photo - Premium Royalty-Free, Code: 649-05801176

    649-05801176

    Businesswoman looking out office window

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  • Businesswoman examining office chair installation art Stock Photo - Premium Royalty-Free, Code: 6113-07242190

    6113-07242190

    Businesswoman examining office chair installation art

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  • Businesswomen fighting over folder Stock Photo - Premium Royalty-Free, Code: 649-06488758

    649-06488758

    Businesswomen fighting over folder

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  • Man admiring mountain view Stock Photo - Premium Royalty-Free, Code: 649-03858394

    649-03858394

    Man admiring mountain view

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  • Upset woman lounging in bed Stock Photo - Premium Royalty-Free, Code: 649-05950681

    649-05950681

    Upset woman lounging in bed

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  • Close-up of teenager girl sitting in front of desktop computer monitor, studio shot Stock Photo - Rights-Managed, Code: 700-07311425

    700-07311425

    Close-up of teenager girl sitting in front of desktop computer monitor, studio shot

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  • Businessman packing up box in office Stock Photo - Premium Royalty-Free, Code: 614-06719367

    614-06719367

    Businessman packing up box in office

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  • Businesswoman examining paint swatches Stock Photo - Premium Royalty-Free, Code: 649-06532576

    649-06532576

    Businesswoman examining paint swatches

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  • Man sitting in bed with sleeping wife Stock Photo - Premium Royalty-Free, Code: 649-06532555

    649-06532555

    Man sitting in bed with sleeping wife

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  • Businessman reading newspaper at window Stock Photo - Premium Royalty-Free, Code: 649-05820982

    649-05820982

    Businessman reading newspaper at window

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  • Businessman leaning against window Stock Photo - Premium Royalty-Free, Code: 649-03447492

    649-03447492

    Businessman leaning against window

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  • Woman examining herself in mirror Stock Photo - Premium Royalty-Free, Code: 649-05950678

    649-05950678

    Woman examining herself in mirror

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  • Doctor against a window, thinking Stock Photo - Premium Royalty-Free, Code: 649-03771519

    649-03771519

    Doctor against a window, thinking

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  • Doctor contemplatively looking down Stock Photo - Premium Royalty-Free, Code: 632-03516455

    632-03516455

    Doctor contemplatively looking down

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  • Man standing on rock in sea Stock Photo - Premium Royalty-Free, Code: 649-03769650

    649-03769650

    Man standing on rock in sea

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  • Hiker looking at the sunrise. Stock Photo - Premium Royalty-Free, Code: 649-02666923

    649-02666923

    Hiker looking at the sunrise.

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  • Portrait of a young female snowboarder Stock Photo - Premium Royalty-Free, Code: 649-06844053

    649-06844053

    Portrait of a young female snowboarder

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  • Flatmates brainstorming around kitchen table Stock Photo - Premium Royalty-Free, Code: 649-07239135

    649-07239135

    Flatmates brainstorming around kitchen table

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  • Girl making a grimace, close-up Stock Photo - Premium Royalty-Free, Code: 649-03666730

    649-03666730

    Girl making a grimace, close-up

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  • Businesswoman viewing charts and graphs on office wall Stock Photo - Premium Royalty-Free, Code: 6113-07242206

    6113-07242206

    Businesswoman viewing charts and graphs on office wall

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  • Close up of athlete thinking Stock Photo - Premium Royalty-Free, Code: 649-04827166

    649-04827166

    Close up of athlete thinking

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  • Girl peeking over table Stock Photo - Premium Royalty-Free, Code: 649-08118168

    649-08118168

    Girl peeking over table

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  • Hiker looking at the sunrise. Stock Photo - Premium Royalty-Free, Code: 649-02666921

    649-02666921

    Hiker looking at the sunrise.

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  • Woman against window, thinking Stock Photo - Premium Royalty-Free, Code: 649-03292277

    649-03292277

    Woman against window, thinking

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  • Condom in thought bubble over girl Stock Photo - Premium Royalty-Free, Code: 649-06352963

    649-06352963

    Condom in thought bubble over girl

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  • A Caucasian male chef putting the finishing touches on a plate of fish in a commercial kitchen. Stock Photo - Premium Royalty-Free, Code: 6118-09173956

    6118-09173956

    A Caucasian male chef putting the finishing touches on a plate of fish in a commercial kitchen.

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  • Teenage girl hugging pillow on bed Stock Photo - Premium Royalty-Free, Code: 649-05555639

    649-05555639

    Teenage girl hugging pillow on bed

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  • Boy in skis on snowy mountaintop Stock Photo - Premium Royalty-Free, Code: 649-05819573

    649-05819573

    Boy in skis on snowy mountaintop

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  • Psychologist helping a couple with relationship difficulties Stock Photo - Premium Royalty-Free, Code: 6109-08203204

    6109-08203204

    Psychologist helping a couple with relationship difficulties

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  • Businessman in the Ocean Stock Photo - Rights-Managed, Code: 700-02797989

    700-02797989

    Businessman in the Ocean

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  • Worried doctor with hand on his head Stock Photo - Premium Royalty-Free, Code: 644-03672140

    644-03672140

    Worried doctor with hand on his head

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  • Businessman Sitting at Desk Writing Stock Photo - Premium Royalty-Free, Code: 600-02081716

    600-02081716

    Businessman Sitting at Desk Writing

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  • Businesswoman with hand on chin in coffee bar Stock Photo - Premium Royalty-Free, Code: 614-08983771

    614-08983771

    Businesswoman with hand on chin in coffee bar

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  • Businessman Sitting at Desk with Self Adhesive Note on Forehead Stock Photo - Premium Royalty-Free, Code: 600-02081738

    600-02081738

    Businessman Sitting at Desk with Self Adhesive Note on Forehead

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  • Businessman with hand under chin with look of concern Stock Photo - Premium Royalty-Free, Code: 632-08130359

    632-08130359

    Businessman with hand under chin with look of concern

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  • Woman looking sadly at a painted heart. Stock Photo - Premium Royalty-Free, Code: 649-03009686

    649-03009686

    Woman looking sadly at a painted heart.

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  • Business people with paint swatches Stock Photo - Premium Royalty-Free, Code: 649-06532583

    649-06532583

    Business people with paint swatches

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  • Frustrated Businessman Looking at Laptop Computer Stock Photo - Premium Royalty-Free, Code: 600-03210452

    600-03210452

    Frustrated Businessman Looking at Laptop Computer

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  • Businessman Sitting at Desk with Self Adhesive Note on Forehead Stock Photo - Premium Royalty-Free, Code: 600-02081739

    600-02081739

    Businessman Sitting at Desk with Self Adhesive Note on Forehead

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  • Woman looking out of the window Stock Photo - Premium Royalty-Free, Code: 649-03009662

    649-03009662

    Woman looking out of the window

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  • Businessman thinking in bright office Stock Photo - Premium Royalty-Free, Code: 6113-07242171

    6113-07242171

    Businessman thinking in bright office

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  • Businessman in the Ocean Stock Photo - Rights-Managed, Code: 700-02797985

    700-02797985

    Businessman in the Ocean

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  • Teenage girl excluded from friend Stock Photo - Premium Royalty-Free, Code: 649-06622658

    649-06622658

    Teenage girl excluded from friend

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  • Woman using exercise ball in gym Stock Photo - Premium Royalty-Free, Code: 649-06042039

    649-06042039

    Woman using exercise ball in gym

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  • Businesswoman examining paint swatches Stock Photo - Premium Royalty-Free, Code: 649-06532581

    649-06532581

    Businesswoman examining paint swatches

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  • A crew of chef's working in a commercial kitchen, Stock Photo - Premium Royalty-Free, Code: 6118-09173955

    6118-09173955

    A crew of chef's working in a commercial kitchen,

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  • Soccer players sitting in locker room Stock Photo - Premium Royalty-Free, Code: 6113-07588878

    6113-07588878

    Soccer players sitting in locker room

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  • Flatmates planning around kitchen table Stock Photo - Premium Royalty-Free, Code: 649-07239136

    649-07239136

    Flatmates planning around kitchen table

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  • Man drawing architectural plans on glass wall Stock Photo - Premium Royalty-Free, Code: 649-07238408

    649-07238408

    Man drawing architectural plans on glass wall

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  • Hiker overlooking snowy mountains Stock Photo - Premium Royalty-Free, Code: 614-06625126

    614-06625126

    Hiker overlooking snowy mountains

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  • Business people examining paint swatches Stock Photo - Premium Royalty-Free, Code: 649-06532586

    649-06532586

    Business people examining paint swatches

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  • Hiker overlooking snowy mountains Stock Photo - Premium Royalty-Free, Code: 614-06625129

    614-06625129

    Hiker overlooking snowy mountains

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  • Serious businessman looking down at window Stock Photo - Premium Royalty-Free, Code: 6113-08659634

    6113-08659634

    Serious businessman looking down at window

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  • Disappointed woman standing in kitchen Stock Photo - Premium Royalty-Free, Code: 649-05820640

    649-05820640

    Disappointed woman standing in kitchen

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  • Hiker overlooking snowy mountains Stock Photo - Premium Royalty-Free, Code: 614-06625127

    614-06625127

    Hiker overlooking snowy mountains

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  • Woman practicing yoga on beach Stock Photo - Premium Royalty-Free, Code: 614-06624837

    614-06624837

    Woman practicing yoga on beach

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  • Businesspeople sitting at conference table looking at laptop Stock Photo - Premium Royalty-Free, Code: 649-07238401

    649-07238401

    Businesspeople sitting at conference table looking at laptop

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  • Psychologist helping a couple with relationship difficulties Stock Photo - Premium Royalty-Free, Code: 6109-08203205

    6109-08203205

    Psychologist helping a couple with relationship difficulties

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  • Disappointed woman standing in kitchen Stock Photo - Premium Royalty-Free, Code: 649-05820641

    649-05820641

    Disappointed woman standing in kitchen

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  • Businessman working at laptop in classroom Stock Photo - Premium Royalty-Free, Code: 6113-08321495

    6113-08321495

    Businessman working at laptop in classroom

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  • Senior Man Sitting Sitting at Table using Laptop Computer looking Confused, Studio Shot on Beige Background Stock Photo - Premium Royalty-Free, Code: 600-06438982

    600-06438982

    Senior Man Sitting Sitting at Table using Laptop Computer looking Confused, Studio Shot on Beige Background

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  • Portrait of a young female skier Stock Photo - Premium Royalty-Free, Code: 649-06844051

    649-06844051

    Portrait of a young female skier

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  • A business man doing a jigsaw Stock Photo - Premium Royalty-Free, Code: 649-03154015

    649-03154015

    A business man doing a jigsaw

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  • Father helping daughter with homework Stock Photo - Premium Royalty-Free, Code: 6113-07242788

    6113-07242788

    Father helping daughter with homework

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  • Mature adult couple standing having a drink in a room. Stock Photo - Premium Royalty-Free, Code: 6128-08727417

    6128-08727417

    Mature adult couple standing having a drink in a room.

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