No
Not a multiple of two
22 and 24 are
23 is an odd number
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No, it cannot be done. As 23 is odd, two numbers used would have to be one odd and one even. As 2 is the only even prime number and 21 + 2 equals 23, but 21 is not a prime number, it cannot be done.
as 132 is an even number at least one of the two numbers must also be even 12 + 11 = 23 12 x 11 = 132
Only 1 and 23 (23 is a prime number).
An integer is a whole number. For instance, 1, 2, 3... There is no decimal part. So 23 is an integer. A rational number is a number that can be written as a/b. 23 can be written as 23/1, so 23 is a rational number. Thus, 23 is BOTH an integer and a rational number.
18 (All even numbers except 2 are composite.)