Question
Find the missing number in the series: 5, 12, 29, 68, 153, ?
Solution
Pattern: Multiply by 2 and add (n² + 1) 5 × 2 + (1²+1)= 10+2 = 12 12 × 2 + (2²+1)= 24+5 = 29 29 × 2 + (3²+1)= 58+10 = 68 68 × 2 + (4²+1)= 136+17 = 153 Next: 153 × 2 + (5²+1)= 306+26 = 332
More Missing Series Questions
- 321, 240, ?, 105, 51, 6
- 4 10 ? 62.5 156.25 390...
- What will come in place of the question mark (?) in the following series? 35, 38, 46, ?, 85, 120
- What will come in place of the question mark (?) in the following series? 12, 13, 27, ?, 329, 1646
- 51, 60, 78, ?, 141, 186
- Find the missing number in the given number series. 4, 9, 19, 39, 79, ?
- 8      27       64      125     ?       343Â
- What will come in place of the question mark (?) in the following series? 2.5, 6.5, 18.5, 54.5, 162.5, 486.5, ?
- 4, 4, 12, 60, ?, 3780
- 6400, 1600, ?, 80, 16, 4
