Question
12, 23, 68, 271, 1354, ?
What should come in place of the question mark (?) in the following number series?Solution
12×2-1 = 23 23×3-1 = 68 68×4-1 = 271 271×5-1 = 1354 1354×6-1 = 8123
1 1 8 4 27 9 ?
...Given below are two number series I and II where each series has a wrong (odd one out) number. The number that will actually come in place of the wrong ...
[(288)2 ÷ 96 × ?] ÷ 44 = 432
21 48 173 516 1245 2576 ?
...13 22 40 67 103 ?
...3, 7, 16, 35, ?, 153
91 93 97 100 ? 113
Find the 31st term of the series 25, 29, 33……
53 ? 55 49 57 47
...63 189 315 378 567 693
...