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Q.

Which of the numbers is a square of even numbers?


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a

441

b

169

c

289

d

144 

answer is D.

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Detailed Solution

The given numbers are 441, 169, 289 and 144.
It is required to find which of the numbers is a square of even numbers.
A number is even if its unit digit falls inside the range of 0, 2, 4, 6, or 8.
All the given numbers are 441, 169, 289, 144.
Hence, 144 is the square of an even number since its unit digit is 4.
Therefore, option 4 is correct.
 
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