Friday Riddle Answer

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nudgie
nudgie Member Posts: 1,478 Member
edited March 2014 in Colorectal Cancer #1
robinvan had the correct ansswer. CONGRATS!!!!!!!!!!!!!!!!!!

RIDDLE: Subtract 5 from me to get a perfect square.
Rearrange the square of me to get a perfect square.
Divide me by 3 to get a prime number.
Divide me by 7 to get a prime number.

What number am I?

ANSWER: 21 - 5 = 16 (perfect square 4)
21 x 21 = 441-> 144 (perfect square of 12)
21 / 3 = 7 (a prime number)
21 / 7 = 3 (a prime number)

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  • robinvan
    robinvan Member Posts: 1,012
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    YEAH!!
    Another one for the west Coast!

    Rob; in Vancouver