PRC-2 · Chapter 3 · Question 4 of 45
What is the total sum of the first 8 terms of an arithmetic progression if the first term is 10 and the common difference is 5?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) 220
Explanation
The sum formula is S = (n/2) * [2a + (n-1)d]. Substituting the knowns: (8/2) * [2(10) + (8-1)5] = 4 * [20 + 35] = 4 * 55 = 220.
More Mathematical Progression MCQs
- Q6What is the 6th term of the following geometric progression: 1000, 800, 640...?
- Q7Under what condition can the sum of an infinite geometric series be calculated using the convergence formula S = a / (1 - r)?
- Q8Find the sum of the first 12 terms of a geometric progression where the first term is 5 and the common ratio is -2.
- Q9If every single term in an arithmetic progression is multiplied by a constant 'k', what happens to the new common difference?
- Q10A manufacturer sells 1000 units in January, but sales decrease by half each month thereafter. Which formula calculates the total sales for…