Question

If the sum of first k terms of an AP is 32- k and its common difference is 6.

What is the first term?​

Answer 1

Step-by-step explanation:

The sum of first k terms of an A.P is S_k=3k^2-k

If we put k=1 we get the sum of first term i.e. first term.

So, S_1=3(1)^2-(1)

Answer 2

Answer:

32-k=6

-k=6-32

-k=-26

k=26