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
In the following question, select the missing number from the given series.
3, 4, 6, 9, 13, ?
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19, 26, 40, 61, ?, 124
46, 45, 43, 42, 40, 39, ?
9, 13, 22, 38, 63, ?
In the following series, one number is missing as shown by the question mark. Select the missing number from the given options.
8, 12, 16, 20, ?
Find the number which will complete the following series.
0, 1, 8, 27, ?
Find the missing number (?) in the series
1, 1, 4, 8, 9, ?, 16, 6,...
Find the first negative term of the below A.P.
129, 120, 111, 102, ...
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