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Find the Missing Number in the Series: 1, 4, 9, 25, ??,169

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Find the Missing Number in the Series: 1, 4, 9, 25, ??,169
posted Oct 29, 2014 by anonymous

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2 Answers

+1 vote

So SImple. its the series of SQUARE OF PRIME NUMBERS.
So the missing numbers would be 49, 121.

answer Oct 30, 2014 by Ankit Bajpai
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In this series, square root of previous two number is taken, added and square taken for next element. As such missing element = (3+5) ^2 = 64.
Next element = (5+8)^2 = 169.

answer Aug 23, 2016 by Vilas Joshi
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