Question 3
Two different numbers are chosen from $\{1,2,3,4,\ldots,13,14,15\}$. The probability that their sum is odd is written as $m/n$. Find $m+n$.
Use equally likely pairs, and write m/n in lowest terms with positive integers m and n. These standard probability conventions are made explicit here.
Use equally likely pairs, and write m/n in lowest terms with positive integers m and n. These standard probability conventions are made explicit here.