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What would be the next number in this series? 144 ; 121 ; 100 ; 81 ; 64 ; ??

+2 votes
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What would be the next number in this series? 144 ; 121 ; 100 ; 81 ; 64 ; ??
posted Jan 2, 2015 by Brijesh Talwar

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3 Answers

+3 votes
 
Best answer

49

12*12 = 144
11*11 = 121
10*10 = 100
9 * 9 = 81
8 * 8 = 64
So,
7 * 7 = 49

answer Jan 2, 2015 by Kunal Shah
+1 vote

One more solution can be:

i = 23  (decrement its value by 2 after each operation, i.e 21, 19, 17, ..)
next_number = number - i

144 - 23 = 121
121 - 21 = 100
100 - 19 = 81
 81 - 17 = 64
 64 - 15 = 49  (Ans)
answer Jan 5, 2015 by Arshad Khan
+1 vote

12^2,11^2,10^2,....................,7^2

answer Mar 17, 2015 by Manoj Meena
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