I know i made a mistake last question. My apologies, but thanks for the answers!What are 2 prime numbers that add up to 488?
457 + 31 = 488What are 2 prime numbers that add up to 488?
Create a list of all primes between 1 and 488 (answer: there are 94 primes between 1 and 488). Subtract each prime in that list which is less that 488/2 from 488 and check to see if the result is also in the list. If so, it's a solution. There are 10 solutions:
1 + 487
31 + 457
67 + 421
79 + 409
109 + 379
139 + 349
151 + 337
157 + 331
181 + 307
211 + 277
31 and 457.
31 + 457 = 488.
It is not hard (though perhaps a bit tedious) to check that 31 and 457 are, in fact, prime.
11 and 477 works too
(With props. to TheMathemagician)
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment