Question

(g)* a, b, c and d are four numbers such that a=b and b The mode of the numbers is 3, the range is 12 and the mean is 8.

Determine the values of a, b, c and d.

Answer 1

A&B:3

C:11

D: 15

Explanation:

The mode is the most popular number, which is 3, and we know a and b are the same so these must both be e.

The range is 12, so the highest number must be 3 + 12 = 15, so d = 15.

The mean is 8, so our total is 8x4 = 32.

we already have 3 + 3 + 15 = 21, so the final number must be 11 to make it up to 32.