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3. Eight friends take a picnic to a cricket match. As her contribution to the picnic, Hilda buys eight sandwiches at a supermarket. She selects the sandwiches at random from those on display. The probability that a sandwich is suitable for vegetarian is 0.3. Assuming Binomial probability distribution, find the probability that of the eight sandwiches, the number suitable for vegetarians is: a) Exactly 2. [2 Marks] b) 2 or fewer. [3 Marks] c) More than 3. [2 Marks]