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Q.

Find the smallest number by which 98 should be multiplied to make it a perfect square.

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a

b

c

d

answer is A.

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Detailed Solution

Concept: The concept to solve this question is to find the factor of 98 which is obtained by dividing

by

using the concept of Squares and Square Roots values to solve this question the concept used in the problem is all about the Squares and Square Roots the formula for Squares and Square Roots given above you can take the use of a formula to solve the given question by just solving it or putting the data given accordingly
Here
Factor of

=

So on multiplying

to

=

Thus

is the perfect square of the number

So, smallest is 98 which is can multiply to make a perfect square is 2
Hence, the correct answer is option 1) 2

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