The number of subesets contining atmost 2 elements that can be picked out from a set of 8 elements is

The number of subesets contining atmost 5 elements that can be picked out from a set of 8 elements is

The number of subesets contining atmost 3 elements that can be picked out from a set of 8 elements is

The number of commutative binary operations that can be defined on a set of 2 elements is (a) 8 (b) 6 (c) 4 (d) 2

The number of commutative binary operations that can be defined on a set of 2 elements is

The number of functions that can be defined from a set containing 25 elements into a set containing 30 elements is

The number of functions that can be defined from a set containing 25 elements into a set containing 30 elements is