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Express 20 as a sum of 2 prime numbers?
3 + 17 = 20
What are Two prime numbers whose sum is 20?
3 and 17
What is the sum of the first 20 prime numbers?
600 * * * * * It is, in fact, 639
What is the sum of prime numbers between 70 - 90?
-20
What is the unit digit of the sum of the prime numbers between 20 and 50?
It is 1.
What prime number under 20 can be expressed as the sum of three different prime numbers?
They are: 3+5+11 = 19
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 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 is the sum of the first 20 prime numbers?
600 * * * * * It is, in fact, 639
What is the sum of prime numbers between 70 - 90?
-20
What prime number less than 20 can be written as the sum of four different prime numbers?
17
What is the unit digit of the sum of the prime numbers between 20 and 50?
It is 1.
How many increasing sequences of three distinct prime numbers have a sum of 20?
List the primes up to 20 (2, 3, 5, 7, 11, 13, 17, 19) and note that the largest possible prime in the sum is 13 because no two primes add up to and of course 19 is too large as well. Also, observe that 2, the only even prime, must be in the sum, because the sum of three odd primes cannot never be 20. Starting with 2 and 3, we see that is not prime. Next, 2 and 5 give , a prime, so one such increasing sequence is 2, 5, 13. Next, we take 2 and 7, and we see that is prime as well, giving us the second sequence 2, 7, 11. 11 and 13 are already included, so we are done. Thus, there are increasing sequences of three distinct prime numbers that have a sum of 20.
If the sum of three consecutive even numbers is 66 what are the numbers?
The three numbers will be 20, 22, and 24. 20 + 22 + 24 = 66
