BosGuy brain teaser

Posted on August 14, 2020 | 16 Comments

riddle, exercise for your brainEach Friday morning I post a riddle to get you to think outside the box and exercise your brain. If you are stumped, share it with a friend or colleague and see if you can figure out the answer together.

I’ll confirm answers in the afternoon so don’t worry if you don’t see your comment posted right away. I want to give everyone a chance to guess.

This week’s brain teaser:  

9 = 72
8 = 56
7 = 42
5 = 20
3 = ?

Like riddles? Check out past week’s brain teasers.

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16 responses to “BosGuy brain teaser”

  1. Erik Freudenthal's avatar Erik Freudenthal | August 14, 2020 at 6:25 pm | Reply

    6

    Like

  4. Lyne Beausejour's avatar Lyne Beausejour | August 14, 2020 at 11:29 am | Reply

    6

    Like

  5. Bob's avatar Bob | August 14, 2020 at 11:12 am | Reply

    Multiply each number by the same number, minus one. Thus: 9 x 8 =72, 8 x 7=56, 7 x 6=42, etc. Answer: 3 x 2=6.

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  6. anne marie in philly's avatar anne marie in philly | August 14, 2020 at 10:50 am | Reply

    12

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  7. Deedles's avatar Deedles | August 14, 2020 at 10:29 am | Reply

    Math? Nooooooo! 3=6

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  10. edtdavis's avatar edtdavis | August 14, 2020 at 10:12 am | Reply

    9 x 8 = 72
    8 x 7 = 56
    7 x 6 = 42
    5 x 4 = 20
    3 x 3 = 9

    Like

  15. Tom's avatar Tom | August 14, 2020 at 8:09 am | Reply

    What is 6

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