1.

If a1,a2,a3,⋯ are in A.P. such that a1+a7+a16=40, then the sum of the first 15 terms of this A.P. is :

Answer»

If a1,a2,a3, are in A.P. such that a1+a7+a16=40, then the sum of the first 15 terms of this A.P. is :



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