Q.

By splitting into prime factors, find the square root of 144.


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a

22

b

21

c

12

d

11 

answer is C.

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Detailed Solution

Given number is 144.
Prime factorisation of 144=2×2×2×2×3×3
144=2×2×2×2×3×3
144=2×2×3
144=12
Hence, square root of 144 is 12.
Therefore, option (3) is correct.
 
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