alleryIf the common ratio r is 1, the sum of n terms of a G.P. is:
Aa squared
Bn times a
Ca alone
Dn alone
Answer & Solution
Correct answer: B. n times a
1. With r equal to 1 every term equals a.
2. There are n such terms.
3. So the sum is n times a.
_Source: syllabus Mathematics, Chapter 8, Sequences and Series._
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