Probability questions | form four Basic Mathematics

(1990) Question Category: Mathematical Calculation

A fair die and coin are tossed once. What is the probability of a head on the coin and
an even number of the die showing up?

Answer / Solution

UNSOLVED

(1991) Question Category: Mathematical Calculation

A box has 8 red balls and 11 white balls of the same size. A ball is drawn at random
from the box. What is the probability that it is
(i) red
(ii) white?

Answer / Solution

UNSOLVED

(1992) Question Category: Mathematical Calculation

A fair die is tossed once and the number showing up is recorded. What is the probability of an even number grater than two showing up?

Answer / Solution

UNSOLVED

(1993) Question Category: Mathematical Calculation

A box contains 4 white balls and 5 black balls. Two balls are drawn at random from the box. Find the probability that both balls drawn are

(i) white (ii) black.

Answer / Solution

UNSOLVED

(1994) Question Category: Mathematical Calculation

It is known that ^{n} extrm{C}_r=^{n} extrm{C}_{n-r}
Find x given that ^{20} extrm{C}_{18}=^{20} extrm{C}_x

Answer / Solution

UNSOLVED

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