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RE: Daily quiz #001 - Time to crack our brain #steembounty

in #mathematics6 years ago (edited)

my answer is 90.

4^2 + 4 = 20
5^2 + 5 = 30
6^2 + 6 = 42
7^2 + 7 = 56
9^2 + 9 = 81

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You got the answer right but the solution wasn't.
But anyway you won the third place :)
Thanks for your participation.

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