If {x} is the product of all even integers from 1 to x inclusive, what is the greatest prime factor of {12} + {10}?	Options:
A) 23
B) 20
C) 13
D) 5
E) 2
Soln:   {12} + {10} = 12*{10} +{10} = 13*{10}   ANSWER:13
<result>C</result>
If {x} is the product of all even integers from 1 to x inclusive, what is the greatest prime factor of {12} + {10}?