3, 4, 7, ?, 23, 38, 59
A.
B.
C.
D.
Answer & Solution
Solution:
The number series follows the following rule
1st
number = 3
2nd number = 3+1 = 4
3rd number = 4+(1+2) =7
4th number = 7+(1+2+3) = 13
5th number = 13+(1+2+3+4) = 23
6th
number = 23+(1+2+3+4+5) = 38
7th
number = 38+(1+2+3+4+5+6) = 59
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