Question
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 ? What should come in place of the question mark (?) in the following number series?Solution
7 × 2 + 1 = 15 15 × 2 + 1 = 31 31 × 2 + 1 = 63 63 × 2 + 1 = 127 127 × 2 + 1 = 255
More Series Questions
32, 52, 82, 124, 180, ?
9 10 36 333 ? 132825
...A series given below has a missing term (Z), find the value of Z.
3, 10, 36, (Z), 770, 4632
If Z is the first term of another sequence and...
33, ?, 66, 82.5, 99, 115.5
What value should come in the place of (?) in the following number series?
15, 16, 24, 51, 115, ?
81, 83, 87, 95, 111, ?
226, 171, 124, 85, 54, ?
155, 157, 160, ?, 172, 183
Find the missing number in the given number series.
8, 9, 16, 11, 32, 13, ?12, 11, 20, 57, 224, 1015
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