(b) n2 - 3n + 4 is even for all 2. There are 30 pupils in a class.
(a) You make a row of 7 pupils. In how many ways can this be done?
(b) You divide the class into two groups of 15 each. In how many ways
(c) You give each of the 30 pupils one type of cooldrink from 5 different
how many ways can this be done?
(d) Ignoring who gets which cooldrink, how many different cooldrink con
if you choose 30 cooldrinks from 5 types?
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(3)
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