If three unbiased coin are tossed, find the probability that they are all heads

In how many ways can a committee of 2 women and 3 men be chosen from 6men and 5 women?

Find the standard deviation 2, 3, 5 and 6.

Use the table below to answer question

Find the mean mark

How many students took the test?

From the table above, if the pass mark is 5, how many students failed the test?

Find $\int{(\sin x+2})dx$

Evaluate  $\int_{0}^{2}{({{x}^{3}}+{{x}^{2}})dx}$

At what value of x does the function $y=3-2x+{{x}^{2}}$ minimum?

If $y=x\sin x,\text{ find }\tfrac{dy}{dx}$