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-1∈P(h)
B. ϕ-1∈P(h)
C. . If ϕ(c)=c then which of the following is true?a) ϕ-1∈P(h)b) ϕ-1∈P(h)c) ϕ-1∈P(h)
D. belongs to P(c). If ϕ(c)=c then which of the following is true?a) ϕ-1∈P(h)b) ϕ-1∈P(h)c) ϕ-1∈P(h)d) ϕ-1∈P(h)
Answer» C. . If ϕ(c)=c then which of the following is true?a) ϕ-1∈P(h)b) ϕ-1∈P(h)c) ϕ-1∈P(h)


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