The points on a linear graph are as shown in the table. Find the gradient (slope) of the line. 

In the diagram, O is the center of the circle. \(\overline{PQ}\) and \(\overline{RS}\)  are tangents to the circle. Find the value of (M + N).

Which of the following is not a sufficient condition for two triangles to be congruent?

A woman received a discount of 20% on a piece of cloth she purchased from a shop. If she paid $525.00, what was the original price?

The interquartile range of distribution is 7. If the 25th percentile is 16, find the upper quartile.