Question

find 2*6+4*9+6*12+...upto n terms​

Answer 1

answer.

it is not a.p.

2*6+4*9+6*12+..........

common difference of first two term is 24.

common difference of second and third term is 36.

thus it is not right.

then we dont find it.

may be it help you.

Answer 2

The sequence is not in Arithmetic progression i.e AP

since the difference between two consecutive terms is not constant. Therefore it's nth term cannot be calculated.