yes... 2, 4, 5, 10... etc.
250
0.5
50 divided by 1/5 is the same as saying 50 * 5/1 = 250 ----------------( that means there are 250 1/5's in 50 )
1
You will know because a prime number can only be divided by itself and one (1), if it can be divided by anything else then you will know that it is not a prime number.
Anything divided by 1 is itself.
1
Anything.
83.3333
0.25
No. Zero is the exception to the rule, as you cannot divide anything by zero. For everything else though, dividing by itself does indeed give 1.
1.3333