The highest common factor of the numbers 40 and 30 is 10.
10.
There are 10.
31 & 37
The least common factor of any set of numbers is 1.
14 and 28 are two even numbers between 10 and 30 whose greatest common factor is 14.
16,24
14 and 28
14 and 28
16 and 24
The Greatest Common Factor of 30, 40: 10
The highest common factor of the numbers 40 and 30 is 10.
If you are including 10 and 30 there are 11 even numbers. If you are not counting 10 and 30 there are 9 even numbers between 10 and 30.
11, 13, 17, 19, 23, 29 are the primes between 10 and 30 so the composite numbers are all the others. 12,14,15,16,18,20,21,22,24,25,26,27,28, and 30 are the composite numbers between 10 and 30.
21 and 28
It is: 10/30 = 1/3 by dividing both numbers by their highest common factor which is 10
the only factor (divisor) between 30 and 64 are 2, this is also a factor of 42 & 196 working upwards: 1 is always a factor of integers 2 is a factor of all even numbers 3 is a factor of 30 & 42, but not 64 or 196 4 is a factor of 64 & 196, but not 30 or 42 5 is a factor of 30, but not the others 6 is a factor of 30 & 42, but not 64 or 196 7 is a factor of 42, but not the others 8 is a factor of 64, but not the others 9 is not a factor of any of the numbers 10 is a factor of 30, but not the others I could continue, but it gets worse from there, with only occasional numbers being factors...