If one quarter of all the subjects containing three elements of the integers 1,2,3…..m contain the integer 5, then m is equal to

If one quarter of all three element subsets of the set A = { a_1 ,a_2,a_3,. . . ,a_n} contains the element a_3 then n=

If one quarter of all three element subsete of the set A={a_(1),a_(2),a_(3),......,a_(n)} contains the element a_(3) , then n=

If one quarter of all three element subsete of the set A={a_(1),a_(2),a_(3),......,a_(n)} contains the element a_(3) , then n=

The number all three element ofsubsets of the set A = {a_1 ,a_2 , . . . A_8} contains the element a_3 is

The number of all subsets of a set containing 2n+1 elements which contains more than n elements is

The number of all subsets of a set containing 2n+1 elements which contains more than n elements is

Let A={1,2,3,......,15}. The number of different subsets of A containing 4 elements such thatno two consecutive integers lie in the subset,is

If x be any integer different from zero and m, n be any integers, then (x^(m))^(n) is equal to

If 300!=3^(m)xx an integer, then