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Brain teaser to challenge your frontal lobes

Here is a fun brain teas­er from puz­zle mas­ter Wes Car­roll.

Tip­ping the Scales

free brain teasers for frontal lobes

Ques­tion:
The top two scales in the image at the right are in per­fect bal­ance. How many dia­monds will be need­ed to bal­ance the bot­tom set?

This puz­zle helps you work out your exec­u­tive func­tions –sup­port­ed in the frontal lobes— by using your pat­tern recog­ni­tion, hypoth­e­sis test­ing, and log­ic.


ANSWER:

Four dia­monds

SOLUTION:

First add up the num­ber of clubs in the first two scales (5). Then count how many clubs are in the bot­tom scale (5). The do the same with the spades, which gets you 5 and 5. There are 4 dia­monds in the top two bal­anced scales. There­fore, it must take 4 dia­monds to bal­ance the third scale since all the oth­er mea­sure­ments are the same.

More brain teasers and games for adults of any age:

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Categories: Brain Teasers, Cognitive Neuroscience

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