To determine if 75 is a prime number or a composite number, we simply look at the factors for 75.
If the factors of 75 are only 75 and 1, then we know that 75 is a prime number. Otherwise, 75 is a composite number.
To explain better, if 75 is only divisible by 1 and 75, then it is a prime number, and if 75 is divisible by more than 75 and 1, then it is a composite number.
The factors of 75 are as follows:
1, 3, 5, 15, 25, 75
Therefore, since 75 is divisible by more than one and itself, the answer to the
question "Is 75 prime or composite?" is highlighted in blue below.
composite
Is 76 prime or composite?
OK. Now you know that 75 is a composite number. Use our logic above and see if
you can figure out if the next number on our list is prime or composite before you check your answer.
|
|
