Question
In each of the following number series, one term is missing. Find the missing term. 3, 8, 18, 35, 61, ?, 148
Solution
Observe the differences: 8 - 3 = 5 18 - 8 = 10 35 - 18 = 17 61 - 35 = 26 ? - 61 = 37 148 - ? = 50 Now second differences are: 10 - 5 = 5 17 - 10 = 7 26 - 17 = 9 37 - 26 = 11 50 - 37 = 13 So the pattern follows +5, +7, +9, +11, +13 in second difference. Missing term = 61 + 37 = 98 Hence, the missing term is 98.
More Missing Series Questions
- What will come in place of the question mark (?) in the following series? 29, 32, 41, 68, ?, 392
- (248 + 352)/(34 - 30) = ?
- 290, 571, 900, ?, 1485, 1890
- 56, 27, 14.5, 6.25, ?, 1.0625
- 7.5% of 820.68 - 95% of 945.06 + 12.8% of 1050= ?
- What value should come in the place of (?) in the following number series? 300, 421, 252, ?, 188, 549
- 45, 71.01, 98.05, 126.14, ?
- What will come in place of the question mark (?) in the following series? 4, 36, 31, 279, 275, 2475, ?
- What will come in place of (?) question mark in the given number series. 22, 23, 19, 28, ?, 37
- 4, 5, 11, 34, 137, ?
