Only two: (4, 9) and (6, 6). In all other factor pairs, one of the numbers is not composite.
1, 2, 3, 4, 9, 12, 18, 36 Eight numbers
4,6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,27,28,30,32,33,34,35,36,38,39,40,42,44,45,46,48,49,50,51,52 altogether: 36
The composite numbers between 35 and 45 are 36, 38, 39, 40, 42, and 44. In total, there are six composite numbers in that range. A composite number has more than two positive divisors, which these numbers do.
To find how many numbers from 30 to 50 are composite, we first identify the composite numbers in that range. The composite numbers between 30 and 50 are 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, and 49. This gives us a total of 15 composite numbers.
36 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
Assuming the 36 numbers are all different, there are 36*35/2 = 630 pairs.
33 and 34 35 and 36 38 and 39
The composite numbers in that list are 22 and 36 - you know they are composite, because they are even numbers. The other numbers are odd and prime.
1, 2, 3, 4, 9, 12, 18, 36 Eight numbers
There are 3 composite numbers between 35 and 40. They are 36, 38, and 39.
4,6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,27,28,30,32,33,34,35,36,38,39,40,42,44,45,46,48,49,50,51,52 altogether: 36
The composite factors of 36 are 4, 6, 9, 12, 18, 36
36 is a composite number because it has more than two factors whereas prime numbers have only two factors.
There are 3 pairs of prime numbers with sum of 36. These are: (31, 5), (29, 7), (23, 13), & (19, 17) Hope this helps! :D
The composite numbers between 35 and 45 are 36, 38, 39, 40, 42, and 44. In total, there are six composite numbers in that range. A composite number has more than two positive divisors, which these numbers do.
1,2,3,4,6,8,9,12,18,24, and 36
36 is a composite number because it has more than two factors