The number of surjections that can be defined from `{1, 2, 3, 4, 5}` onto `{a, b}` is

The number of surjections that can be defined from {1, 2, 3, 4, 5} onto {a, b, c} is

If n ge 2 then the number of surjections that can be defined from {1, 2, 3, ….n} to {1, 2} is

If n ge 2 then the number of surjections that can be defined from {1, 2, 3, ….n} to {1, 2} is

The number of surjections that can be defined from A={1,2,3,.......n} to B={a,b} is 30 then the value of n is A)4 B)5 C)6 D)7

The number of one one functions that can be defined from {1, 2, 3, 4} onto {a, b, c,d} is

The number of onto functions that can be defined from A={1, 2, 3} to B={a, b, c, d}

Set A has 3 elements. Set B has 4 elements. The number of surjections that can be defined from A to B is

The number of onto functions that canbe defined from A = {a, b, c, d, e} to {1, 2} is

The number of one one onto functions that can be defined from {1,2,3,4} onto set B is 24 then n(B) =