If the first, second and last term of an A P are a,b and 2a respectively, its sum is - Maths - Sequence and Series of Real Numbers

Question

If the first, second and last term of an A P are a,b and 2a
respectively, its sum is

Both (1) and (2)

K. Navinkumar · Answer

I have found the answer, it is 2nd option Sorry for inconvinience
caused

If the first, second and last term of an A.P. are a,b and 2a respectively, its sum is Both (1) and (2)