Question

The smallest number by which √27 should be multiplied so as to get a rational number? with the solution
a)√27
b)3√3
c)√3
d)3
​

Answer 1

Answer: 27 is 3 root 3. When 3 root 3 is multiplied by root 3 we have 9, which is rational. The correct option is D.

Answer 2

Correct option is (c)

27= 3x3x3

Root 27 means root (3x3x3)

Which is equal to 3 root 3

Now 3 root 3 x root 3 will give a rational answer 9. Hence option c