Answer: The first five multiples of 21 are 21, 42, 63, 84 and 105.
Step-by-step explanation: The multiples of a number are all the numbers that are products of the number and any other integer. For example, the multiples of 2 are 2, 4, 6, 8, 10, 12, 14, 16, and so on. Multiples are found by multiplying the number and any integer.
