Mathematics Past Questions and Answers

A box contains 9 white balls and \(x\) red balls. If the probability of selecting a white ball is \(\frac34\), find \(x\).

Two dice are rolled. Find the probability of getting doubles.

Find the median of:<br/>\[<br/>9,\ 4,\ 7,\ 3,\ 8,\ 6,\ 5<br/>\]

Find the mean of:<br/>\[<br/>4,\ 6,\ 8,\ 10,\ 12<br/>\]

The mean of five numbers is 14. Find their total.