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#### ssome help

##### New member

- Apr 7, 2013

- 3

A) Find P(sub2)(A(sub1)), P(sub2)(A(sub2)), P(sub2)(A(sub4)), and P(sub2)(A(sub5))

B) Use mathematical induction to prove that the number of elements in P(sub2)(A(subn)) is (n*(n-1))/2 for all n elements of Z+.