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Mathematics

Algebra

Easy

Question

Four different integers form an increasing A.P. such that one of them is the square of the remaining numbers. Then the largest number is

The correct answer is: 2

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If $1 over 1 squared plus 1 over 2 squared plus 1 over 3 squared plus horizontal ellipsis horizontal ellipsis. infinity equals pi squared over 6$ ,then $1 over 1 squared plus 1 over 2 squared plus 1 over 3 squared plus 1 over 5 squared horizontal ellipsis horizontal ellipsis$ equals

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