Final answer:
To find the number of two-digit numbers that can be formed using numbers from the set {0, 1, 2, 3, 4} if the number must contain at least one odd digit, we can use a product table.
Step-by-step explanation:
To find the number of two-digit numbers that can be formed using numbers from the set {0, 1, 2, 3, 4} if the number must contain at least one odd digit, we can use a product table.
First, let's list out all the possible two-digit numbers using the given set: 10, 11, 12, 13, 14, 20, 21, 22, 23, 24, 30, 31, 32, 33, 34, 40, 41, 42, 43, 44.
Out of these twenty numbers, the ones that contain at least one odd digit are: 11, 13, 21, 23, 31, 33, 41, 43. So, the number of two-digit numbers that can be formed using numbers from the set {0, 1, 2, 3, 4} if the number must contain at least one odd digit is 8.