Question

(i) For an A.P., if S10= 150 and S9 = 126,t10 =?
(A) 24 (B) 22 (C) 26 (D) 20​

Answer 1

Answer:

24 is the answer

Step-by-step explanation:

150-126=24

Answer 2

Answer:

A)70

Step-by-step explanation:

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

●150 =10/2( 2a + 9d )

2a + 9d = 30

●Then, 126 = 9/2 (2a + 8d)

2a + 8d = 28

Solving these two equations, d = 2 and a = 6.

10th term = a + (n-1)2

= 6 + 9×2

= 24

HOPE THIS HELPS YOU