Question

find the sum of first 16 terms of an ap 2,6,10..​

Answer 1

Answer:

Sum of n terms is n/2(2a+(n-1)d)

here we have a= 2, d=4 and n=16

substituting the values we get

S(16) = 16/2(2x2+(15)4)

= 8(4+60)

= 8(64)

= 512

Hence sum of 16 terms is 512.

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Teacher.