CA Foundation P3 · Chapter 6 · Question 7 of 9
Three numbers in A.P. have sum 27 and product 504. The largest of the numbers is:
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: A) 14
Explanation
Let the numbers be a − d, a, a + d. Sum 3a = 27 gives a = 9. Product 9(81 − d²) = 504, so 81 − d² = 56 and d = 5. The numbers are 4, 9, 14 and the largest is 14.
More Sequence and Series - Arithmetic and Geometric Progressions MCQs
- Q9The sum of the first n terms of the series 0.7 + 0.77 + 0.777 + ... is:
- Q1The 15th term of the A.P. 7, 11, 15, 19, ... is:
- Q2The sum of the first 20 terms of the A.P. 3, 8, 13, ... is:
- Q3How many terms of the A.P. 5, 9, 13, ... must be taken so that their sum is 230?
- Q4The 8th term of the G.P. 3, 6, 12, 24, ... is: