If `A={1,2}`, then find `n(P(A))`

If two natural numbers r and s are drawn one at a time, without replacement from the set S={1,2,3,….n}, then find P (rlep//slep) where p in S.

If n(A)=2, then find the value of n(P(A))

IF A={1,{2,3}} , find P(A) and n {P(A)} .

If P(11,r)=P(12,r-1) find n

If two natural r and s are drawn one at a time, without replacement from the set S = { 1 , 2 , 3 , ….., n} , then find P ( r le p // s le p) where p in S .

If P(n+1, 5) : P(n,6) = 2:7 then find n

If P(n+1, 5) : P(n,6) =2:7 then find n

If P(n,4)=20P(n,2), find n

Let P_(n)=root(n)(((3n!)/(2n!)))(n=1,2,3dots) then find lim_(n rarr oo)(P_(n))/(n)

P(n+1,5):P(n,5)=2:3 then find n