Question 4: We have \(1^2 + 2^2 + 3^2 + …10^2 = 385\)
We have \(1^2 + 2^2 + 3^2 + …10^2 = 385\)
I guess \( ( 1^2 +2^2 + 3^2 +…+10^2 ) .3^2 = 385.3^2\)
Hence we can calculate \(A = 3^2 + 6^2 + 9^2 + …+30^2 = 3465\)
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Question 4: We have \(1^2 + 2^2 + 3^2 + …10^2 = 385\)
We have \(1^2 + 2^2 + 3^2 + …10^2 = 385\)
I guess \( ( 1^2 +2^2 + 3^2 +…+10^2 ) .3^2 = 385.3^2\)
Hence we can calculate \(A = 3^2 + 6^2 + 9^2 + …+30^2 = 3465\)
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