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Hard brain teaser to challenge your pattern recognition

Here’s a quick but hard brain teas­er to chal­lenge your abil­i­ty to find a pat­tern. In the table below, each row across fol­lows the same pat­tern. See if you can dis­cern the pat­tern and fill in the miss­ing num­ber in the bot­tom row.

For added chal­lenge, time how long it takes you to com­plete the puz­zle. Then, pass it along to some­one else and see who can solve it faster…

7 4 8
3 9 7
6 5 10
? 8 4

Have you solved it yet? If not, here’s a hint:

If you read your fig­ures like words in the West,
then mul­ti­ply your efforts and sub­tract the rest.

WARNING:  Answer and solu­tion fol­lows. Try to solve the puz­zle before you read fur­ther.

(7x4)-8 = 20

(3x9)-7 = 20

(3x8)-4 = 20

The answer is 3.

 

–> For more brain teas­er games for kids and adults of any age, click below:

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As seen in The New York Times, The Wall Street Journal, BBC News, CNN, Reuters,  SharpBrains is an independent market research firm tracking how brain science can improve our health and our lives.

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