Final answer:
The number 21 is an odd, composite number and a multiple of 3, while 22 is an even, composite number and a multiple of 11. Neither are prime numbers or multiples of 5.
Step-by-step explanation:
The numbers 21 and 22 can be classified using multiple relationships. The number 21 is an odd number because it cannot be divided evenly by 2. It is also a multiple of 3 (3 x 7). Additionally, 21 is a composite number since it has more factors than just 1 and itself. On the other hand, the number 22 is an even number since it can be divided by 2 without a remainder. Furthermore, 22 is also a multiple of 11 (2 x 11) and is considered a composite number as it has factors other than 1 and itself. Neither 21 nor 22 are prime numbers because prime numbers only have exactly two distinct positive divisors: 1 and the number itself. Neither of the numbers is a multiple of 5, as they cannot be divided evenly by 5.