General Maths Puzzle Numerical Ability Sequence and Series

What will be ? in given series
2,10, 30, 68, …?…, 222

Read Solution (Total 3)

ans: 130

1^3+1 = 2
2^3+2 =10
3^3+3 =30
4^3+4 =68
5^3+5 =130
6^3+6=222
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2, 10, 30, 68, 130, 222
SO 130,
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130
difference is 8,20,38
and diff between difference is 12,18,24 so next will be 30 which implies 92 which implies 130
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General Other Question

In the following question, a series is given and it is followed by the starting point of another series. After this a question is given, you have to complete the second series by applying the same logic as in the first given series, and then you have to answer the question.

8, 9, 13, 22, 38, 63,....
12, a, b, c, d, e, A, B and C can do a piece of work in 24 days, 30 days and 40 days respectively. They began the work together but C left 4 days before the completion of the work. In how many days was the work completed?