Question

If 24th term of an a.p is twice the 10th term prove that 72th term is twice the 34th term

Answer 1

Step-by-step explanation:

hope it will help you and answer is right

Answer 2

Step-by-step explanation:

T24=2×T10

a+23d=2(a+9d)

a+23d=2a+18d

a=5d. (1)

T34=a+33d

T34=5d+33d. (1)

T34=38d

2×T34=2×38d

2×T34= 76d

2×T34=5d+71d

2×T34=a+71d. (1)

2×T34= T72