Question

34.
The smallest number by which 2646 must be multiplied to obtain a perfect square is
(A) 6
(B) 4
(C) 3
(D) 5​

Answer 1

Answer:

(A) 6

Step-by-step explanation:

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Answer 2

Answer:

To find out we need to know the factores of 2646

i.e.

2646= 2 x 3 x 3 x 3 x 7 x 7

Here only 2 and one 3 lack a pair hence to get a perfect squair we need to multiply with 2 x 3 i.e. 6

therefore the answer is 6