Just 43
32 and 25
If you don't include 20, 25 and 30, all of the numbers in that range are relatively prime to 25.
-25
Prime numbers: 11, 13, 17, 19, 23, 29 Composite numbers: 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30
No two prime numbers can make 30.No two prime numbers can make 30.No two prime numbers can make 30.No two prime numbers can make 30.
The prime numbers between 20 and 30 are 23 and 29.
30, 20 and 12
If you don't include 20 and 30, all of them.
Prime numbers between 30 and 45 are 31, 37, 41 and 43.
The factors of 30 that are not prime numbers are 6, 10 and 30.
They are: 13 17 19 23 and 29
5 x 5 20 + 5 30 - 5 125 ÷ 5