PRC-2 · Chapter 3 · Question 35 of 45
The sum of the first 10 terms of an AP starting with 2 and having a common difference of 3 is:
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: B) 155
Explanation
Formula: Sn = (n/2)[2a + (n-1)d]. Here, S10 = (10/2)[2(2) + (9)(3)] = 5[4 + 27] = 5[31] = 155.
More Mathematical Progression MCQs
- Q37What is the formula for the 'Sum to Infinity' (S∞) of a convergent GP?
- Q38If the 1st term of an AP is 5 and the 10th term is 32, what is the common difference (d)?
- Q39What is the common ratio (r) of the GP: 100, 50, 25...?
- Q40The sequence 5, 10, 20, 40... is an example of a/an:
- Q41In the GP formula for the sum of 'n' terms, if r > 1, the formula used is: