Daily Practice - Higher Plus

A bag holds 6 red, 5 blue and 3 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?

On a histogram the bar for 40 < x ≤ 50 has a frequency density of 2.4. How many values are in that class?On a histogram the bar for 40 < x <= 50 has a frequency density of 2.4. How many values are in that class?

Rationalise the denominator of 33/√3, giving your answer in its simplest form.Rationalise the denominator of 33/sqrt(3), giving your answer in its simplest form.

Solve x² - x - 2 > 0.Solve x^2 - x - 2 > 0.

A train slows steadily from 31 m/s to rest in 8 seconds. Work out its deceleration.