Question

Find the first five terms of Geometric progression if a = 1024
and r=
Which term of the A.P. 1, 5, 9, 13.......; is 97 ?​

Answer 1

2. 1, 5, 9 , 13

here a = 1 and d = 5 - 1 = 4

tn = a + (n - 1) d

97 = 1 + (n - 1) 4

97= 1 + 4n -4

97 = -3 + 4n

97 + 3 = 4n

4n = 100

n = 100/4

n = 25

97 is 25th term of th A.P.

Answer 2

Answer:

25th term is 97

Step-by-step explanation:

a = 1

d = 4

tn = 97

tn = a + (n - 1)d

97 = 1 + (n - 1)4

97 = 1 + 4n - 4

97 = 4n - 3

97 + 3 = 4n

100 = 4n

100/4 = n

25 = n

25th term is 97