Question

Danny keeps five cards with the picture of a cat and six cards with the picture of a dog on a table face down, so the pictures are hidden. He mixes up the cards then turns one card over and finds the picture of a dog on it. He removes this card from the table and turns over another card. What is the probability that the card Danny turns over has a dog on it?

A - 4/10
B - 5/11
C - 5/10
D - 5/6

Answer 1

5 cat cards, 6 dog cards......total of 11 cards

he picks a dog on first try
does not replace card....so there are now 5 dog cards and a total of 10 cards..so the probability of picking another dog card is : 5/10