These are always difficult for me; I always end up using trial and error. In this particular case, here is a way to get 39 out 1, 2, 3 and 4:
42 - 31
If you are not allowed to use exponents, then there is:
31 + 4 * 2
The only numbers that multiply to get a product of 39 are 1 and 39, or 3 and 13.
Only the number one. Factors of 39 - 1, 3, 13 and 39. Factors of 8 - 1, 2, 4 and 8.
39 is composite... --------------------- A prime number is a whole number greater than 1, whose only two whole-number factors are 1 and itself.
two that make 39 their difference is 11
The only common factors of 24 and 39 are 1 and 3.
The only numbers that multiply to get a product of 39 are 1 and 39, or 3 and 13.
Only the number 1.
Only the number one. Factors of 39 - 1, 3, 13 and 39. Factors of 8 - 1, 2, 4 and 8.
only 1 or 1313 is a prime number
39 is composite... --------------------- A prime number is a whole number greater than 1, whose only two whole-number factors are 1 and itself.
two that make 39 their difference is 11
No, 39 is not a factor of 43. Since 43 is a prime number, its only factors are 1 and 43.
39 is a composite number because it has more than two factors. 1 is neither prime nor composite because it has only 1 factor.
39 would be a composite number because not only does it have 1 as a factor but it has 13 and 3 because 13*3 39 is a composite number. Other than itself and 1, its other positive integer factors are 3 and 13.
1+2+3^2*4 ^ means square, i.e. 3*3 Hope it's correct!
The only common factors of 24 and 39 are 1 and 3.
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