nandhakumar1 Profile Answers by nandhakumar1 Questions by nandhakumar1 Nov 26th, 2009 131 is prime number?It cant become the product of three numbers,so it is wrong.

suhana Profile Answers by suhana Questions by suhana Jul 29th, 2010 No,Its correct 9^2+7^2+1^1=131the sum is=17

harish 27sit145 Profile Answers by harish 27sit145 Sep 29th, 2010 Use formula (a+b)^2=a^2+b^2+2ab=138+131=269Taking square root we get a+b=17 as answer

harish 27sit145 Profile Answers by harish 27sit145 Sep 29th, 2010 Ans is 20138+2*131=400 square root gives 20a+b=20

## Sum of Numbers

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