11, 15, 31, 67, 131,?
singhisking3337:
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the next number will be 231
As,
2,4,6,8,10............
are even numbers
(2)²=4
first number is 11+4=15
then (4)²=16
15+16=31
then (6)²=36
31+36=67
then (8)²=64
67+64=131
then (10)²=100
131+100==231
As,
2,4,6,8,10............
are even numbers
(2)²=4
first number is 11+4=15
then (4)²=16
15+16=31
then (6)²=36
31+36=67
then (8)²=64
67+64=131
then (10)²=100
131+100==231
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