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A box contains $6$ blue, $4$ white and $8$ red marbles. A marble is drawn at random from this box. Find the probability that the marble so drawn is :
(i) white
(ii) white or red
(iii) not red
(i) white
(ii) white or red
(iii) not red
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(i) $P(\text{white marble}) = \frac{4}{18} \text{ or } \frac{2}{9}$ [$1$ mark]
(ii) $P(\text{white or red marble}) = \frac{12}{18} \text{ or } \frac{2}{3}$ [$1$ mark]
(iii) $P(\text{not a red marble}) = \frac{10}{18} \text{ or } \frac{5}{9}$ [$1$ mark]
(ii) $P(\text{white or red marble}) = \frac{12}{18} \text{ or } \frac{2}{3}$ [$1$ mark]
(iii) $P(\text{not a red marble}) = \frac{10}{18} \text{ or } \frac{5}{9}$ [$1$ mark]