Class 10 SELINA Solutions Maths Chapter 11 - Geometric Progression
Ex. 11(A)
Ex. 11(B)
Ex. 11(C)
Ex. 11(D)
Geometric Progression Exercise Ex. 11(A)
Solution 1(i)
Solution 1(ii)
Solution 1(iii)
Solution 2
Solution 3
Solution 4
Solution 5
Solution 6
Solution 7
Solution 8
Solution 9
Solution 10
Solution 11
Solution 12
Given series: 2, - 6, 18, - 54 ……
Geometric Progression Exercise Ex. 11(B)
Solution 1
Solution 2
Solution 3
Solution 4
Solution 5
Solution 6
Solution 7
Solution 8
Solution 9
Solution 10
Geometric Progression Exercise Ex. 11(C)
Solution 1
Solution 2
Solution 3
Solution 4
Solution 5
Solution 6
Solution 7
Solution 8(i)
Solution 8(ii)
Solution 9
Geometric Progression Exercise Ex. 11(D)
Solution 1(i)
Solution 1(ii)
Solution 1(iii)
Solution 1(iv)
Solution 1(v)
Solution 1(vi)
Solution 2
Solution 3
Solution 4
Solution 5
Solution 6
Solution 7
Solution 8
Solution 9
Solution 10
Solution 11
Solution 12(i)
Solution 12(ii)
Solution 12(iii)
Solution 13
Solution 14
Solution 15
First
term (a) = 
Solution 16
First term (a) = 125
Solution 17
Thus,
the given sequence is a G.P. with 
Solution 18
Solution 19
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,
