Suppose P(h) is a group of permutations and identity permutation(id) b – McqOptions

MCQOPTIONS

1.	Suppose P(h) is a group of permutations and identity permutation(id) belongs to P(c). If ϕ(c)=c then which of the following is true?
A.	ϕ∈P(h)
B.	ϕ⁻¹∈P(h)
C.	ϕ⁻²∈P(h)
D.	None of the mentioned
Answer» C. ϕ⁻²∈P(h)

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