princesspayton9 princesspayton9

20-03-2016
Mathematics

contestada

In how many ways can 10001 be written as the sum of two primes?

a.0
b.1
c.2
d.3
e.4

Respuesta :

Gloria141001 Gloria141001

20-03-2016

a. 0
If the sum of two numbers is odd, one number must be even and the other number must be off, because all primes except 2 are off, 2 must be one of the summands, because 10,001 = 2+9999, and 9 x 1111 is not prime, so there are no solutions.

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