1.
The cube root of .000216 is:

2.
What should come in place of both x in the equation x/√128 = √162/x

3.
The least perfect square, which is divisible by each of 21, 36 and 66 is:

4.
√1.5625 = ?

5.
If 3√5 + √125 = 17.88, then what will be the value of √80 + 6√5?