KnowledgeBoat Logo
|

Mathematics

The nth term of the G.P. x3, x5, x7, …….. is :

  1. x(2n - 1)

  2. x(2n + 3)

  3. x(2n + 1)

  4. x3n + 2

G.P.

1 Like

Answer

In the given G.P.,

a = x3

r = x5x3\dfrac{x^5}{x^3} = x5 - 3 = x2

We know that,

nth term of a G.P. is given by,

Tn = arn - 1

⇒ Tn = x3.(x2)n - 1

= x3.(x2n - 2)

= x2n - 2 + 3

= x2n + 1.

Hence, option 3 is the correct option.

Answered By

3 Likes


Related Questions