By just observing the digits at one's place, tell which of the following can be perfect squares? 1026,1022,1024,1027
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Given:
1026,1022,1024,1027
To find:
Perfect square
Solution:
No square numbers ends with 2, 3, 7 or 8.
The number of zeros at the end of a square number is always even.
A number ending with an odd number of zeros is never a perfect square.
1026 is not a perfect square.
_______________________________
√1026 = 32.03
√1022 = 31.96
√1024 = 32
√1027 = 32.04
Hence : 32^2 = 1024
Perfect Square is 1024
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