How many three-digit even numbers can be made from the digits 1, 2, 3 and 4 without repeating the digits?
Show hints
- An even number must end in 2 or 4.
- After selecting the last digit, select hundreds and tens.
Show the answer and solution
Answer: 12
Last digit - 2 or 4: two choices. For hundreds there are three digits left, for tens there are two. Total 2 × 3 × 2 = 12.