If P = {1,2,3,4,5} and Q = {a,b,c}, then the number of onto functions from P to Q is

If A={1, 2, 3, 4, 5}, B={a, b, c, d} then the number of onto functions that can be defined from A to B is

If P={1,3},Q={2,3,5} ,then find the number of relations from P to Q

If m= number of distinct rational numbers (p)/(q)in(0,1) such that p,q in{1,2,3,4,5} and n= number of onto mappings from {1,2,3} onto {1,2}, then m-n is

If m=number of distinct rational numbers p/q in (0,1) such that p, q in {1,2,3,4,5} and n= number of onto mappings from {1, 2, 3} onto {1,2}, then m-n is

If n(A) = p and n (B) = q then numbers of non void relations from A to B are (2^(p+q)-1) .

If P=(a,b,c) and Q=(1,2) , then the total number of relations P to Q are not functions is

If P=(a,b,c) and Q=(1,2) , then the total number of relations P to Q are not functions is

If A = {p,q,r, s} and B = {1, 2, 3} , find which of the following is not a function from A to B? A. R_1={(p,1),(q,2),(r,1),(s,2)} B. R_2={(p,1),(q,1),(r,1),(s,1)} C. R_3={(p,1),(q,2),(p,2),(s,3)} D. R_4={(p,2),(q,3),(r,2),(s,2)} ANSWER: C

Let X = {1, 2, 3,.......... 10} and P = {1, 2, 3, 4, 5} . The number of subsets Q of X such that P Delta Q = {3) is __________

If n(A)=p,n(B)=q and total number of functions from A to B is 343, then p-q (A) 3 (B) -3 (C) 4 (D) none of these