next number of the sequence 1, 5, 14, 30, 55, ......... will be

M4maths Previous Puzzles

16 Jul 2012 sequence

next number of the sequence
1, 5, 14, 30, 55, .........
will be

OPtion

1) 61
2) 68
3) 72
4) 76
5) 79
6) 83
7) 89
8) 91
9) 98
10) none of these

Solution

1^2 = 1
1^2 + 2^2 = 5
1^2 + 2^2 + 3^2 = 14
1^2 + 2^2 + 3^2 + 4^2 = 30
similarly

Correct Option: 8 Best Solution (0)