PRC-2 · Chapter 3 · Question 42 of 45
What is the sum of the first 5 terms of the GP: 3, 6, 12...?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: B) 93
Explanation
a=3, r=2, n=5. Sum = 3(2^5 - 1) / (2 - 1) = 3(32 - 1) / 1 = 3 × 31 = 93.
More Mathematical Progression MCQs
- Q44The 'Geometric Mean' (GM) between two positive numbers 'x' and 'y' is defined as:
- Q45If you add 4 to each term of an AP, the new sequence will:
- Q1What is the specific mathematical term for a succession of numbers formed and arranged according to a definite law or rule?
- Q2In an arithmetic progression, which mathematical formula is used to find the value of the 'nth' term?
- Q3Find the 8th term of an arithmetic progression where the first term is 10 and the common difference is 5.