MathematicsProgressionsJAMB
Find the sum to infinity of 9 + 3 + 1 + …
Show answer
Answer: B. 13.5
a = 9, r = ⅓: S∞ = a/(1 − r) = 9 ÷ ⅔ = 13.5.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.
Mathematics · Progressions
Discussion
Ask about a step, share a shortcut, or explain it your way. Be kind; no links.
No comments yet. Be the first to explain it.
More Progressions questions
- Find the sum of the first 12 terms of the arithmetic progression 2, 6, 10, ...
- The first term of a GP is 18 and its sum to infinity is 27. Find the common ratio.
- Find the sum to infinity of 8 + 4 + 2 + 1 + ...
- 3, x and 12 are consecutive terms of a geometric progression with positive terms. Find x.
- Find the sum of the first 20 terms of the series 2 + 5 + 8 + ...