21. If 1 < p < 40, how many values of P exist such that (P-1)!
is not divisible by p?
(a) 11
(b) 10
(c) 12
(d) 13.
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Answer:
If 1 < p < 40, how many values of P exist such that (P-1)!
is not divisible by p?
b is the correct answer..
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