Question

Find the odd one out of the following.

पर्याय

• `sqrt(32) xx sqrt(2)`

• `sqrt(27)/sqrt(3)`

• `sqrt(72) xx sqrt(8)`

• `sqrt(54)/sqrt(18)`

Answer 1

`bb(sqrt(54)/sqrt(18))`

Explanation:

`sqrt(32) xx sqrt(2) = 64`

= `sqrt(4^2 xx 4)`

= 4 × 2

= 8

`sqrt(27)/sqrt(3)`

= `sqrt(9)`

= 3

`sqrt72 xx sqrt8 = sqrt(3 xx 3 xx 2 xx 2 xx 2) xx sqrt(2 xx 2 xx 2)`

= `3 xx 2sqrt2 xx 2sqrt2`

= 3 × 4 × 2

= 24

`sqrt(54)/sqrt(18) = sqrt(3/1)`

= `sqrt3`

= 1.7320

∴ `sqrt(54)/sqrt(18)` It is an odd number.