Question
388, ?, 98, 49, 24,
15 What should come in place of question mark (?) in the following number series?Solution
388 - 132 = 219 129 - 112 = 98 98 - 72 = 49 49 - 52 = 24 24 - 32 = 15
More Series Questions
35.25 71 146 296 624 1376
...22   39    58    81   ?      141
1 9 64 255 755 1835
...Find the odd one out: 11, 13, 17, 19, 21
32 63 121 ? 453 889
...1,2, 5, ‘?’, 41, 122, 365
7Â Â Â Â Â Â 15Â Â Â Â Â Â Â 31Â Â Â Â Â Â 63Â Â Â Â Â Â 127Â Â Â Â Â Â ?
...122, 116, 125, 119, 128, ?
13, 14, 18, 27, 43, ?
38    40    83    254    ?     5126
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