Q2 of 105 Page 152

Write three terms of the GP when the first term ‘a’ and the common ratio ‘r’ are given?
a = , r = 2

First term (a) = ; common ratio (r) = 2

The three terms are given by

⇒ a, ar, ar².

= , ×2, ×²

Write three terms of the GP when the first term ‘a’ and the common ratio ‘r’ are given?

a = √5, r =

Write three terms of the GP when the first term ‘a’ and the common ratio ‘r’ are given?

a = 81, r =

Which of the following are GP? If they are in GP. Write three more terms?

4, 8, 16,….

Which of the following are GP? If they are in GP. Write three more terms?

, ,……

Questions · 105

6. Progressions

1 1 1 1 2 2 2 2 2 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 1 2 2 3 3 3 3 3 4 5 5 6 7 8 9 10 11 12 13 14 15 16 17 1 1 1 1 2 2 2 3 3 3 3 3 3 3 4 5 6 7 7 8 9 10 11 12 13 14 1 1 1 2 2 2 2 3 3 3 3 3 3 3 3 3 4 1 1 1 1 2 3 3 4 4 4 5 6 7

Write three terms of the GP when the first term ‘a’ and the common ratio ‘r’ are given?a = , r = 2