Question

If the 10th teem of AP is -4 and its 22nd teem is -16.Find the 29th teem of AP

Answer 1

CORRECT QUESTION

if the 10th term of Ap is -4 and it's 22nd term is

-16 find the 29th terms of Ap

EXPLANATION

• GIVEN

10th term of Ap = -4

a + 9d = -4 ....(1)

22nd term of Ap = -16

a + 21d = -16 ....... (2)

TO FIND 29TH TERM OF AP.

From equation (1) and (2)

we get,

-12d = 12

d = -1

put the value of d = -1 in equation (1)

we get,

a - 9 = -4

a = -4 + 9

a = 5

29th term of Ap

a + 28d

5 + 28(-1)

5 - 28

-23

29th term = -23