Class 10 SELINA Solutions Maths Chapter 11 - Geometric Progression
Ex. 11(A)
Ex. 11(B)
Geometric Progression Exercise Ex. 11(A)
Solution 8
Solution 18
Solution 9
Solution 19
Solution 10
Solution 20
Solution 11
Solution 2
Solution 12
Solution 3
Solution 13
Solution 4
Solution 14
Solution 15
Solution 21(i)
Solution 5
Solution 16
Solution 21(ii)
Solution 17
Solution 22
Solution 6
Solution 7
Given series: 2, - 6, 18, - 54 ……
Geometric Progression Exercise Ex. 11(B)
Solution 2(i)
Solution 2(ii)
Solution 2(iii)
Solution 2(iv)
Solution 2(v)
Solution 2(vi)
Solution 3
Solution 4
Solution 5
Solution 6
Solution 7
Solution 8
Solution 9
Solution 10
Solution 11
Solution 12
Solution 13(i)
Solution 13(ii)
Solution 13(iii)
Solution 14
Solution 15
Solution 16
First term (a) = 
Solution 17
First term (a) = 125
Solution 18
Thus, the given sequence is a G.P. with 
Solution 19
Solution 20
Let the five terms of the given G.P. be
Given, sum of first two terms = -4
And, 5th term = 4(3rd term)
⇒ ar2 = 4(a)
⇒ r2 = 4
⇒ r = ±2
When r = +2,
When r = -2,
