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November 14th, 2017, 05:02 AM   #1
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Probability

A Normal pack of 52 cards is shuffled and three cards are picked at random. Draw a tree diagram to help calculate the following probability of picking
a) two clubs first
b)three clubs
c) no clubs
d) at least one club
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November 14th, 2017, 08:18 AM   #2
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There are 13 cards for each colour set(club, diamond, spade and heart) in a pack of 52 cards.

So, in the 1st draw the probability of getting a card of any specific colour is 13/52. After you have made the 1st draw the probability of getting another card with the same colour is 12/51 as one card of that particular colour is already reduced from the pack. While the probability of getting another card of any other colour is 39/51. And this thing continues in similar manner for the following draws.
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