brain teasers adults

Quick brain teasers to exercise your working memory

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Draw the let­ter J in your mind.

Now draw the let­ter D. Turn it 90 degrees to the left and put it in top of the J.

What does this shape resem­ble? [Read more…] about Quick brain teasers to exer­cise your work­ing memory

Brain teaser: Will you finish your thesis on time?

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Imag­ine spend­ing the sum­mer pol­ish­ing your PhD the­sis in the library. Every day you take the sub­way, a train going up North to the university.

One day you real­ize that the trains going South can bring you to the beach. Noth­ing is wrong with some leisure. You cal­cu­late that if you spend half of the remain­ing sum­mer vaca­tion in the library that should be enough to fin­ish the the­sis. To spice up the sum­mer, [Read more…] about Brain teas­er: Will you fin­ish your the­sis on time?

Brain Teaser for pattern recognition: The Empty Triangle

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Here you have a quick brain teaser…which num­ber should be placed in the emp­ty tri­an­gle to  the right?

This puz­zle works your exec­u­tive func­tions in your frontal lobes by using your pat­tern recog­ni­tion, hypoth­e­sis test­ing, and logic.

Warn­ing: There can be more than one solution…but make sure what­ev­er you say works in all four triangles!

The Emp­ty Triangle

Pattern Recognition Test - Empty Triangle

Let us know how you do! [Read more…] about Brain Teas­er for pat­tern recog­ni­tion: The Emp­ty Triangle

Brain teaser: How many haircuts do you think happen in America every year?

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haircuts_google

Google’s infa­mous brain-teas­er inter­view ques­tions don’t pre­dict per­for­mance (Busi­ness Insider):

“Google built a rep­u­ta­tion for ask­ing brain-teas­er ques­tions like “How many hair­cuts do you think hap­pen in Amer­i­ca every year?” They’re sup­posed to test, in the­o­ry, how you tack­le a big prob­lem ana­lyt­i­cal­ly [Read more…] about Brain teas­er: How many hair­cuts do you think hap­pen in Amer­i­ca every year?

Math Brain Teaser: How to Choose a Mans Shirt

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You have been invit­ed to an impor­tant fundrais­ing gala at your old col­lege and decid­ed that this black-tie event demands a short col­lar super white Ital­ian shirt, like the one you bought years ago for your wed­ding. When you brave­ly tried the wed­ding shirt on (size 16), your wife not­ed that the col­lar suf­fo­cates you and you need about 1/4″ more space every­where in-between your neck and the col­lar all around your neck. What size shirt do you need to buy?  In case you don’t know the shirt size 16 means that a tape wrapped around your neck and two fin­gers posi­tioned flat upfront will mea­sure 16 inches.

[Read more…] about Math Brain Teas­er: How to Choose a Mans Shirt

Math Brain Teaser: Unfinished Thesis

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You are spend­ing the sum­mer pol­ish­ing your the­sis in the uni­ver­si­ty library. Every day you take the esca­la­tor into the sub­way, turn right and catch a train going up North to the uni­ver­si­ty. One day you real­ize that the trains on your left going in the oppo­site direc­tion can bring you to the beach. It is sum­mer and noth­ing is wrong with some leisure. You care­ful­ly cal­cu­late that even if you spend half of the remain­ing sum­mer vaca­tion in the library it should be enough to fin­ish the the­sis. You decide to spice up your sum­mer by [Read more…] about Math Brain Teas­er: Unfin­ished Thesis