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Guess the next number in the series 83, 121, 16, 49, 169, 256,?

+1 vote
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Guess the next number in the series 83, 121, 16, 49, 169, 256,?
posted Mar 21, 2014 by Salil Agrawal

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2 Answers

+1 vote

169 (Add up the digits of the previous number and square it).

answer Mar 22, 2014 by Natarajan Venkatraman
0 votes

Next number is 169.
First number 83 -> 8+3=11 and square of 11 is 121
Second number 121 -> 1+2+1 = 4 and square of 4 is 16
Thirst number 16 -> 1+6 = 7 and square of 7 is 49
Fourth number 49 -> 4+9 = 13 and square of 13 is 169
Fifth number 169 -> 1+6+9 = 16 and square of 16 is 256
Sixth number 256 -> 2+5+6 = 13 and square of 13 is 169

answer Apr 22, 2014 by Shatark Bajpai
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