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The odd primes less than 20 are:

3 5 7 11 13 17 19

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Q: What are the odd primes less than twenty?
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There are 25 prime numbers less than 100 is their sum even or odd?

Oh, what a happy little question! Let's take a look at those prime numbers. When we add them up, we find that their sum is actually even. Isn't that just a delightful surprise? Remember, in the world of numbers, there's always a little bit of magic waiting to be discovered.


What are the 2 odd composite numbers less than 20?

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How many of the prime numbers between 10 and 20 can be written as the sum of two primes?

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What odd number is less than 160 and has exactly 3 different prime factors?

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