Daily Practice - Higher

13 students study Spanish and 8 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.

A box plot has minimum 13, lower quartile 20, median 25, upper quartile 28 and maximum 33. Work out the interquartile range.

A code is 2 letters (A to Z) followed by 3 digits (0 to 9), and repeats are allowed. How many codes are possible?

For the curve y = x² + 4x - 5, work out y when x = 3.For the curve y = x^2 + 4x - 5, work out y when x = 3.

y is directly proportional to x². When x = 5, y = 100. Work out y when x = 3.y is directly proportional to x^2. When x = 5, y = 100. Work out y when x = 3.