+225 I am doing my homework and I don't get the consept of this question. Can any of you help?
Here it is;
This whole number is between 30 and 40. It has only two prime factors whose sum is 5. What is the number?
I think that it is 36, but I could be totally wrong.
Thanks in advance!
Llama on!
MamaLlama
+247 CPhill is right,
31, 37 are prime.
32 has only 1 prime factor".......... 2
33=3 x 11
34=17 x 2
35=7 x 5
38=19 x 2
39=13 x 3
this would only leave 36= 2^2 x 3^2
soo...... The prime factors are 2 and 3...... And these, indeed, sum to 5!!!! So he is right
+129852 31, 37 are prime
32 only has one prime factor ..... 2
33 = 3 x 11
34 = 17 x 2
35 = 7 x 5
38 = 19 x 2
39 = 13 x 3
This leaves only 36 = 2^2 x 3^2
So...the prime factors are 2 and 3....and these, indeed, sum to 5 !!!!
+247 CPhill is right,
31, 37 are prime.
32 has only 1 prime factor".......... 2
33=3 x 11
34=17 x 2
35=7 x 5
38=19 x 2
39=13 x 3
this would only leave 36= 2^2 x 3^2
soo...... The prime factors are 2 and 3...... And these, indeed, sum to 5!!!! So he is right
