0
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.
Add your answer:
Earn +20 pts
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.
How many ways can 24 be written as the sum of two different prime numbers?
Two, if the order of the primes is ignored.
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.
In how many ways can 24 be written as sum of two diffrent prime numbers?
How about: 17+7 = 24, 19+5 = 24 and 11+13 = 24 as three examples
Are there any numbers that aren't the sum of 2 primes?
no
How many of the first ten whole numbers can be expressed as the sum of the two different primes?
Five of them.
Is the sum of prime numbers cannot be a prime?
Not true. 2 + 3 = 5, where all three are primes. One of the primes in the sum must be 2, otherwise both primes would be odd and their sum would be even (and >2) and therefore not prime. Such primes: p and p+2 [3 and 5 in the above example] are known as twin primes and there are infiitely many twin primes.
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 prime numbers always a prime numer?
It is not. Of the infinitely many primes only one (the number 2) is even, the rest are all odd. The sum of any two primes other than 2 is even and therefore not a prime. If one of the primes in the sum is 2 then the sum is a prime only if the other is the lower of a pair of twin primes. So, while it is possible, it is certainly more likely that the sum is a composite.
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.
Express 46 and 38 as the sum of two odd primes?
To express the numbers 46 and 38 as the sum of two odd primes, you can use the following combinations: For 46: 46 = 43 (a prime number) + 3 (a prime number) 46 = 41 (a prime number) + 5 (a prime number) For 38: 38 = 37 (a prime number) + 1 (a prime number) 38 = 31 (a prime number) + 7 (a prime number) So, 46 can be expressed as the sum of two odd primes in two ways, and 38 can also be expressed as the sum of two odd primes in two ways.
What 2 prime numbers equal 221?
There are no two primes whose sum is 221.
What two prime numbers equal 209?
There are no two primes whose sum is 209.
