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There are 15 prime numbers up to 50.
Prime numbers are infinite.
The two prime numbers that add up to 19 are 7 and 12. Prime numbers are numbers greater than 1 that can only be divided by 1 and themselves. In this case, 7 and 12 are not prime numbers, and there are no two prime numbers that add up to 19.
5 x 5 20 + 5 30 - 5 125 ÷ 5
They are simply: 100+25 = 125