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What are Two prime numbers whose sum is 20?
3 and 17
How many of the prime numbers between 10 and 20 can be written as the sum of two primes?
All prime numbers greater than 2 are odd numbers. For an odd prime to be written as the sum of two primes, one of the primes must be 2 because two odd primes will produce an even sum. 11 cannot be written as the sum of two primes. 13 = 2 + 11. 17 cannot be written as the sum of two primes. 19 = 2 + 17.
Express 20 as a sum of 2 prime numbers?
3 + 17 = 20
What three prime numbers have a sum of 20?
They are: 2+7+11 = 20
Is the sum of two composite numbers also composite?
Not always as for example 20+9 = 29 which is a prime number
What is the product of two prime numbers whose sum is twenty?
17 and 3 are two prime numbers whose sum is 20. Their product is 51.
What are Two prime numbers whose sum is 20?
3 and 17
What are two prime numbers less than 20 who's sum is also a prime number?
(2,3) and (2,5) are the two pairs such that the sum of their elements is a prime number.
What is the sum of two prime numbers that equal 20?
13 + 7 1 + 193 + 17
What is the sum of the largest prime less than 20 and more than 60?
The largest prime less than 20 is 19. The largest prime over 60 is 61. The sum of these two numbers is 80.
What are two prime numbers less than 20 whose sum is also a prime number?
2 + 3 = 5
How many of the prime numbers between 10 and 20 can be written as the sum of two primes?
All prime numbers greater than 2 are odd numbers. For an odd prime to be written as the sum of two primes, one of the primes must be 2 because two odd primes will produce an even sum. 11 cannot be written as the sum of two primes. 13 = 2 + 11. 17 cannot be written as the sum of two primes. 19 = 2 + 17.
What is the sum of twin prime numbers from 20 to 50?
148
What is the sum of the odd prime numbers from 1-20?
It is 75.
Express 20 as a sum of 2 prime numbers?
3 + 17 = 20
What three prime numbers have a sum of 20?
They are: 2+7+11 = 20
Is the sum of two composite numbers also composite?
Not always as for example 20+9 = 29 which is a prime number
