Question

Which Of The Following Expressions Denotes A Real Number? Kindly Show Your Solution.​

Answer 1

2.
`\left((36)/(49)\right)^{(1)/(2)}`

Explanation:

1.
`(-10\:000)^(1)/(4)`

It cannot be simplified further.

2.
`\left((36)/(49)\right)^{(1)/(2)}`

`\frac{36^{(1)/(2)}}{49^{(1)/(2)}}`

`=(6)/(7)`

6/7 is a real number, therefore, the answer is number 2.