The venn diagram show a class of 50 students with the games they play. How many students play only two games

From the diagram above, find the value of $\angle ROP$

In the diagram above l₁ is parallel to l₂. Find the value of $\angle PMT$

The sum of the interior angles of a polygon is given as 1080^o. Find the number of the sides of the polygon.

From the diagram above, find the value of $\angle OTQ$

If the 2^nd term of a G.P is $\tfrac{8}{9}$ and the 6^th term is$4\tfrac{1}{2}$. Find the common ratio 

In a school of 150 students, 80 offers french while 60 offers Arabic and 20 offer neither. How many students offer both subjects?

Find the derivative of $y={{(\tfrac{1}{3}x+6)}^{2}}$

If the mean of 4, y, 8 and 10 is 7. Find y

Integrate $\frac{2{{x}^{3}}+2x}{x}$ with respect to x