3 pairs of white socks, 2 pair of black socks and 5 pair of grey socks are mixed and put in a drawer. on a particular day, john woke up late. He randomly snatched two socks from the drawer, put them on and rushed to work.
(a)represent the sample space using a tree diagram
(b)find the probabilty that john has taken
(i) a pair of socks of the same colour,
(ii) a pair of socks of different colours,
(iii) a black sock and a white sock.
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