How many three-digit numbers can be formed from the digits 1, 2, 3, 4, and 5?
a. How many three-digit numbers can be formed if no repetition is allowed?
b. How many different three-digit odd numbers can be formed?
c. How many different three-digit numbers larger than 400 can be formed?
How many 3-digit numbers can be formed from the digits 1, 2, 3, 4 and 5 assuming that repetition of the digits is not allowed. = m x n x p = 5 x 4 x 3 = 60.