7 and 3 are prime numbers but 21 is a composite nuber
factors of 21: 3, 7 prime factors of 21: 3, 7
The prime factors of 21 are 3 x 7.
It is: 3*7 = 21
21 = 3 x 7 both 3 and 7 are prime numbers
17 is a prime number, but 21 is not (21 = 3 * 7).
They are: 3 and 7
3 x 7 = 21
3 and 7 are prime numbers whose product is 21.
The numbers 3, 7, and 21 are related by multiplication and divisibility. Specifically, 3 multiplied by 7 equals 21 (3 × 7 = 21). Additionally, 21 is divisible by both 3 and 7, making these numbers interconnected in basic arithmetic operations. They can also be expressed in terms of their prime factors, with 3 and 7 being prime numbers themselves.
It is 3 time 7 = 21
3 and 7
Its factors are: 1 3 7 and 21 Note that 3 and 7 are prime numbers