Find the wrong number in the series.
1, 2, 6, 15, 31, 56, 91
The difference of the two consecutive numbers are 1, 4, 9, 16, 25, 35.
This is clearly , +12, +22, +32, +42, +52,+62
Here 35 is wrong, So our wrong number is 91
Select the number missing from the given sequence.
1, 2, 6, ___, 120, 720
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In the following question, select the missing number from the given series.
8, 16, 43, 107, 232, ?
9, 9, 18, 54, 216, ?
Find the value of (?) in the series
3, 4, 6, 8, 12, ?, 18
Which number will fit both the series of numbers?
Series A : 1, 4, 9,...Series B : 1, 8, 27,...
Which number will fit in '?' place in the following series?
2, ?, 12, 20, 30, 42
3, 5, 7, 9, ?
42, 21, 21, ?, 63, 157.5