Select one of the alternatives from the following questions

Select one of the alternatives from the following questions as your answer. If A = {1, 7,9,15} then the number of possible subsets of A are 12 16 8 6 If A = {1,3,5,7,9,. . . } with the set of positive integers as the universal set. Then A is Set of positive even integers Set of negative even integers Set of negative integers None If / : A right arrow B be a function such that f(a) = 4, f(b) = 1, f(c) = 2 and f(d) = 5 where A = {a,b,c,d}and B = {1,2,3,4,5,6} then. f is 1-1 and onto both. f is onto but not 1-1. f is 1-1 but not onto . f Is not a function. If f : A rightarrow B, g : B rightarrow B and h: B rightarrow A arc functions then composition function got be a function from rightarrow A B rightarrow A B rightarrow BAD. A rightarrow B If f: Z rightarrow Z be a function such that f(x) = 2x, then f is 1-1. f is onto f is bijective All of the above The value of (-1)^j is 0 1 -1 -1

Solution

a).B) 16

b). A) set of positive even integers

c). C) f is 1-1 but not onto

d).D) A to B.