Question

Let f be a function from {a, b, c, d} to {1, 2, 3, 4} with f(a) = 4, f(b) = 2, f(c) = 1, f(d) = 3. Then fis
A One-to-one
B. Onto
C. Into
D. None of these​

Answer 1

Answer:

b. onto

Step-by-step explanation:

Let f be a function from {a, b, c, d} to {1, 2, 3, 4} with

f(a) = 4,

f(b) = 2

f(c) = 1

f(d) = 3.

Then f is

A One-to-one

B. Onto

C. Into

D. None of these