Kallie wants to invite Ainsley, Alysse, Bre, Becky, and Darla to a movie, but her mom will only allow her to invite two friends. She writes the name of each friend on a piece of paper and places them in a bag. She randomly selects two papers from the bag. What is the probability that the names of the two friends she selects start with the same letter? Show your work.

The probability that Kallie will select two friends whose names starts with the same letter is .

Step-by-step explanation:

There are a total of 10 different outcomes of selecting two friends without caring about order. Out of the 10 possible outcomes, only 2 of them meet the requirement of the names of her friends starts with the same letter. So the probability that Kallie will select two friends whose names starts with the same letter is or .

a=24; b=12

step-by-step explanation:

a/b=2: 1

a=2b

36/(1+2)=12

b=12

a=24