Question

if the second term of a G.P is 3 and it's 5th term is 81. write down the first four term of the series
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Answer 1

Answer:

A.P. -23, 3, 29, 55, 81...

Explanation:

a + d= 3 -----(I)

a + 4d = 81 ----- (ii)

Subtracting (i) from (ii),

3d = 81-3 = 78

d= 78/3

= 26

Substituting d= 26 in (i),

a= 3- 26

= -23

A.P. -23, 3, 29, 55, 81...