If you select two cards from a pile of cards numbered 1 to 10, what is the probability that the sum of the numbers is less than 5?	Choose the correct answer:
A) 1/45
B) 2/45
C) 2/15
D) 4/15
E) 1/5
The number of ways to choose two cards is 10C2=45.   There are 2 ways, {1,2} and {1,3}, to get a sum less than 5.   P(sum less than 5)=2/45   The answer is 2/45.
<result>B</result>
If you select two cards from a pile of cards numbered 1 to 10, what is the probability that the sum of the numbers is less than 5?