jmc

Question

In a three-digit number, the hundreds digit is greater than 5, the tens digit is greater than 4 but less than 8, and the units digit is the smallest prime number. How many three-digit numbers satisfy all of these conditions?

Accepted Answer

We have four choices for the hundreds digit, three choices for the tens digit, and only one choice for the units digit. Thus we have a total of 4 3 1 = 12 possible numbers.