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This question is improperly worded, I will assume you did not mean to have an 's' after the word 'prime'.
Now you should know, neither 1 nor 0 is considered to be prime. So the only prime numbers under 7 that we can work with here are 2, 3, and 5. Using 3 digits, there is only 1 possible combination here: 2 + 2 + 3 = 7. Do not be tempted to put 5 + 2 + 0 = 7 or any other combination because, as I said before, 0 and 1 are not prime numbers.
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How many pairs of prime numbers have a sum of 40?
There 4 pairs of primes that can give a sum 40 in addition. They are (3,37), (11,29), (17,23),(19,21).
Is the sum of two primes even?
Yes. all prime numbers are odd numbers so the sum of any two will be an even number.
What 2 odd primes equal the sum of 10?
The prime numbers 3 an 7 are both odd and sum to 10.
What are the three odd primes with the sum of 14?
There are not three odd primes with the sum of 14. The sum of three odd primes will be an odd number.
Can a product of primes be split into sum of three products of primes?
Sure. All composite numbers can be written as a product of primes. It shouldn't be tough to find a composite number that's the sum of three other composite numbers. Let's try 30. 2 x 3 x 5 = 30 Product of primes, check. 6 (2 x 3) + 10 (2 x 5) + 14 (2 x 7) = 30 Sum of three products of primes, check.
