Daily Practice - Higher Plus

A bag holds 7 red, 4 blue and 2 green counters. Two are taken without replacement. Given neither is green, what is the probability both are red?

On a histogram the bar for 20 < x ≤ 25 has a frequency density of 1.2. How many values are in that class?On a histogram the bar for 20 < x <= 25 has a frequency density of 1.2. How many values are in that class?

Rationalise the denominator of 14/√2, giving your answer in its simplest form.Rationalise the denominator of 14/sqrt(2), giving your answer in its simplest form.

Write 6/(x - 2) + 6/(x - 4) as a single fraction.

y is directly proportional to x³. When x = 2, y = 16. Work out y when x = 4.y is directly proportional to x^3. When x = 2, y = 16. Work out y when x = 4.