1. If g and f are two one-to-one functions, then their composition of fog is:
(A) Onto
(B) One to one function
(C) Bijective
(D) None of these
2. If 1=1 then 2=3, the conditional statement is:
(A) False
(B) True
(C) Biconditional
(D) None of the above
3. Which of the following pair is not congruent modulo 7?
(A) 10,32
(B) -21,23
(C) 25,56
(D) None of the above
4. Let A = {1, 2, 3} and R = {(1, 3), (2, 2), (3, 1)} be a relation on A. Is R:
(A) Transitive
(B) Reflexive
(C) Transitive and Reflexive
(D) Symmetric
5. In Boolean addition 1+1 =:
(A) 2
(B) 1
(C) 0
(D) None of the above
6. The simple graph with n vertices, the maximum degree is:
(A) n+1
(B) 2n-1
(C) n
(D) n-1
7. How many vertices does a circle have?
(A) Only 1
(B) 8 vertices
(C) No vertices
(D) None of the above
8. If g(x) = 3x + 2, then gog(x) is:
(A) 6x + 4
(B) 9x + 8
(C) 3x – 2
(D) None of the above
9. The number of distinguishable permutations of the letters in the word BANANA is:
(A) 60
(B) 36
(C) 20
(D) 10
