Question

(ii) Write any one arithmetic progression with common difference 5. Find its nth term and sum of first 'n' terms.​

Answer 1

Answer:

let A.P be 5, 10, 15

COMMON DIFFERENCE (d) = 5

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

Step-by-step explanation:

here a is the first term, n is the tern to be found

nth term can be found by the formula

nth term = a + (n - 1)d

Answer 2

Answer:

I have assumed n as 70 and the AP as 5 10 15.... 25....