Mathematics → Sets, Functions, and Groups Quiz

Pages: 1 | 2

6. Which from the following set has closure property w.r.t addition ?
(A) {0}
(B) {1}
(C) {1,1}
(D) {1,–1}

7. Which from the following set has closure property w.r.t multiplication ?
(A) {0,–1}
(B) {1,–1}
(C) {–1}
(D) {–1,–1}

8. Complete the truth table

p	q	q → p
T	T	T
T	F	___
F	T	___
F	F	___

(A) T, F, T
(B) F, T, F
(C) F, F, T
(D) T, T, F

9. If a function f: A→B is such that Ran f ≠ B then f is a/an ?
(A) into function
(B) onto function
(C) surjective
(D) none of these

10. If a function f: A→B is such that Ran f = B then f is a/an ?
(A) into function
(B) onto function
(C) injective
(D) none of these

ANSWERS: SETS, FUNCTIONS & GROUPS QUIZ
6. A
7. B
8. A
9. A
10. B