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Earn +20 ptsQ: Is 31 an even number
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Is 4 a common factor of 20 and 31?
no because 31 is not an even number. Therefore an even number can not be a factor of it. 31 is a prime number so the only factors it has are 1 and 31
If you add or subtract using only prime numbers is the answer always a prime number?
No, as all prime numbers are odd, excluding 2, and when you add two odd numbers you get an even number. This even number can't be a prime number as it will be divisible by 2. 101 and 31 are both prime, but 101+31 is 132.
Why is 31 not a prime number?
31 is a prime number
Is 31 a whole number?
31 is a whole number and it is also a prime number
Is 31 even or odd?
31 is odd.
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