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If a1 , a2 , a3, …."" an are in A.P. whe...

If `a_1 , a_2 , a_3, …."" a_n` are in A.P. where `a_i gt 0` for all `i` , then the value of
`(1)/(sqrt(a_1) + sqrt(a_2)) + (1)/(sqrt(a_2) + sqrt(a_3)) + … + (1)/(sqrt(a_(n-1)) + sqrt(a_n))` :

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