Question
What will come in place of (?) in the given number series.
2, 6, 15, 31, 56, ?Solution
ATQ,
Pattern: Add squares of natural numbers
2 + 2² = 6
6 + 3² = 15
15 + 4² = 31
31 + 5² = 56
56 + 6² = 92
64Â Â Â Â 32Â Â Â Â Â Â 32 Â Â Â Â Â Â 48Â Â Â Â Â Â 96 Â Â Â Â Â Â ?
...15, 90, 95, ?, 383, 766Â Â
What value should come in the place of (?) in the following number series?
4, 10, 22, 46, ?, 190
66, 17, 81, ?, 100, -21Â
16, 32, 68, 132, ?, 376
415 246 367 ? 335 310
...Which of the following number will replace the question mark (?) and complete the given number series?
4, 5, 12, 39, 160, ?
116, 118, 124, 136, 156, ?
51, 60, 78, ?, 141, 186
632, 625, 611, 590, 562, ?