Using the digits 4, 5, 7 and 0 without repetition which of the following is the smallest four-digit number?
A. 0457
B. 4057
C. 4507
D. 4075.
Answer:B
Using the digits 4, 5, 7 and 0 without repetition which of the following is the smallest four-digit number?
A. 0457 B. 4057 C. 4507 D. 4075.