321 / 6 = 53.5
No - 321/2 = 160.5.
By any of its factors which are: 1, 3, 107 and 321
No.
No.
Yes, 321 is divisible by 3 because the sum of its digits (3 + 2 + 1) equals 6, which is a multiple of 3.
Out of that list, only 3.
Both are divisible by 3.
1, 3, 107, 321
All numbers are divisible by 1.
They are: 1, 3, 107 and 321
There are 17 numbers between 300 and 400 that are divisible by three but not divisible by two. They are: 303, 309, 315, 321, 327, 333, 339, 345, 351, 357, 363, 369, 375, 381, 387, 393 and 399.