Meeting is to be addressed by 5 speakers a, b, c, d,
e. In how many ways can the speakers be ordered if b must not precede a (immediately or otherwise) :
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Answer:
60 Ways
Step-by-step explanation:
Meeting is to be addressed by 5 speakers a, b, c, d, e. In how many ways can the speakers be ordered if b must not precede a (immediately or otherwise) :
5 Speaker can address in 5! ways = 120
Either b can speak before a Or after a
ways the speakers be ordered if b must not precede a = 120/2 = 60 Ways
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