"Show that "n{P[P(P(phi)]}=4

Show that n{P{P(P(varphi))}}=4.

Show that n{P{P(P(varphi))}}=4

The cardinality of the set P{P[P(phi)]} is

Prove that for a null set phi, n{P(P(phi))}=2 .

Let P (n) denote the statement : “ 2^n gen ! ". Show that P(1), P(2) and P(3) are true but P(4) is not true.

Let P(n) denote the statement: 2^(n)ge n! .Show that P(1),P(2),P(3) are true butP(4) is not true.

Show that ""^(n)P_(n)=2""^(n)P_(n-2)

Show that ""^(n)P_(n)=2""^(n)P_(n-2)

Show that P(m,1)+P (n,1)=P(M+n,1) for all positive integers m, n.