1.

Suppose P(h) is a group of permutations and identity permutation(id) belongs to P(c). If (c)=c then which of the following is true?

A. <sup>-1</sup> P(h)
B. <sup>-1</sup> P(h)
C. <sup>-1</sup> P(h)
D. <sup>-1</sup> P(h)
Answer» C. <sup>-1</sup> P(h)


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