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.
There 4 pairs of primes that can give a sum 40 in addition. They are (3,37), (11,29), (17,23),(19,21).
Yes. all prime numbers are odd numbers so the sum of any two will be an even number.
The prime numbers 3 an 7 are both odd and sum to 10.
There are not three odd primes with the sum of 14. The sum of three odd primes will be an odd number.
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.
Two, if the order of the primes is ignored.
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.
How about: 17+7 = 24, 19+5 = 24 and 11+13 = 24 as three examples
no
Five of them.
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.
There 4 pairs of primes that can give a sum 40 in addition. They are (3,37), (11,29), (17,23),(19,21).
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.
19 and 43 are two primes having 62 as their sum.
Yes. all prime numbers are odd numbers so the sum of any two will be an even number.
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.
There are no two primes whose sum is 221.