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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.
Of the numbers from 1 to 30, only 30 has all three of those numbers as factors.
The factors of 30 that are not prime numbers are 6, 10 and 30.
There are 30 such numbers.
composite numbers 30-40