An exponent tells how many times a factor is muliplied by itself.
And exponent of -2 represents the square root
10!
exponent
exponent
an exponent
1/3
7.24
3
An exponent.
A number with a small exponent is smaller than a number with a large exponent. If two numbers have the same exponent then compare the mantissae. The smaller mantissa represents the smaller number.
4/3
The answer could be exponential representation but, given the limited amount of information in the question, it is hard to be sure.