41.5714
Divide 7 into 291. If it comes out evenly, it's a factor. It doesn't, so it's not.
No. If you divide 291 by 12 you will see that it does not go in 291 an exact number of times.
1.62 divided by7 = 0.23142857142857146
Divide 7 into 291. If the result is an integer, 7 is a factor.
No.
There isn't an easy test for 7. You have to divide it. 7 is not a factor of 291.
no because if you divide you get 41.57 and that is not a whole number.
291 divide by 7 = 41.57142857142857
1001.7143
Divide it. It isn't.
Divide 291 by 7 and see if you get a whole number or is there a remainder. If it is not a whole number, then it is not a factor. 7 goes into 291 41 times with a remainder of 4, so it is not a factor.
8.8571