Question
Mathematics Question on Geometric Progression
The sum of an infinite number of terms of a G.P. is 20, and the sum of their squares is 100, then the first term of the G.P. is
A
5
B
8
C
7
D
6
Answer
8
Explanation
Solution
Answer (b) 8
The sum of an infinite number of terms of a G.P. is 20, and the sum of their squares is 100, then the first term of the G.P. is
5
8
7
6
8
Answer (b) 8