Relations and Functions  MCQs

MCQs of Relations and Functions

Showing 51 to 60 out of 145 Questions
3 4 5 6 7 8
51.
For f : R → R, f(x) = x2 + 4x + 5, f  is _____.
(a) one - one and onto
(b) one - one but not onto
(c) not one - one but onto
(d) neither one - one nor onto
Answer:

Option (d)

52.
For f : R → R, f(x) = x2 - x - 2, f  is _____.
(a) one - one and onto
(b) one - one but not onto
(c) not one - one but onto
(d) neither one - one nor onto
Answer:

Option (d)

53.
f : A × B → A, f((a, b)) = a, A is not singleton set. A ≠ Φ, B ≠ Φ then, f  is _____.
(a) one - one and onto
(b) one - one but not onto
(c) not one - one but onto
(d) neither one - one nor onto
Answer:

Option (c)

54.
If f : R → R, f(x) = x3  then, f  is _____.
(a) one - one and onto
(b) one - one but not onto
(c) not one - one but onto
(d) neither one - one nor onto
Answer:

Option (a)

55.
f : Z→Z, f(n) = n ,n is even2n + 3,n is odd,  then f is _____.
(a) one - one and onto
(b) one - one but not onto
(c) not one - one but onto
(d) neither one - one nor onto
Answer:

Option (b)

56.
If f : N - {1} → N, f(n) = largest prime divisor of n, then f is _____.
(a) one - one and onto
(b) one - one but not onto
(c) not one - one but onto
(d) neither one - one nor onto
Answer:

Option (d)

57.
f : R→R, f(x) = 2x + 1 ,x ≥ 0x2,x < 0,  then f is _____.
(a) one - one and onto
(b) one - one but not onto
(c) not one - one but onto
(d) neither one - one nor onto
Answer:

Option (d)

58.
If f : R × (R - {0}) → R, f((x, y)) =xy, then f is _____.
(a) one - one and onto
(b) one - one but not onto
(c) not one - one but onto
(d) neither one - one nor onto
Answer:

Option (c)

59.
Is f : R - {3} → R - {1}, f(x) =x - 2x - 3, then f is _____.
(a) one - one and onto
(b) one - one but not onto
(c) not one - one but onto
(d) neither one - one nor onto
Answer:

Option (a)

60.
Is f : R  → R, f(x) = x -[x] then f is _____.
(a) one - one and onto
(b) one - one but not onto
(c) not one - one but onto
(d) neither one - one nor onto
Answer:

Option (d)

Showing 51 to 60 out of 145 Questions
3 4 5 6 7 8