Yes, 57/3 = 19
57 = 3 x 19 so 57 is divisible by 1, 3, 19 and 57.
No. 57 is divisible by 3.
1, 3, 19, 57.
No. it is composite. 57 is divisible by 3 and 19 :)
57 is divisible by 1, 3, 19 and 57.
1, 3, 19, 57.
You can see quickly that the number 57 is divisible by 3: 3 * 20 = 60 so if we remove one of those 3's then 3 * 19 = 57 so it is divisible by at least 3 and 19 (as well as itself and 1) Because it is divisible by numbers other than itself and one, 57 cannot be prime. You can also check to see if a number is divisible by 3 by adding its digits and checking to see if that number is divisible by 3: 5+7 = 12 ; and 12 is divisible by 3, so 57 is as well.
57 divided by 3 is 19. (Any number in which all the digits add up to equal a number divisible by 3 is divisible by 3. 5+7=12 which is divisible by 3.) And since 57 is divisible by more numbers than just 1 and itself it is a composite number.
3 yes, 9 no.
57 is divisible by the prime numbers of 3 and 19
yes, 3 X 57 = 171
57 is divisible by 3, but if you have to estimate... 60/3 = 20