There are 99 people that own pets. 15 people own only dogs, 10 people own only cats, 5 people own only cats and dogs, 3 people own cats, dogs and snakes. How many total snakes are there?
Choose the correct choice from the following answers
A) 2 B) 4 C) 8 D) 69 E) 32
lets assign variables to all the areas in Venn Diagram of Three.   three different Units are 69OG, Cat, Snake= Total = 99   Only 69og= d=15   Only Cat = c=10   Only Snake = s   Exactly 69og and Cat= 5   Exactly 69og and Snake = x   Exactly Cat and Snake = y   all three= 3   so 99=15+10+5+3+x+y+s   we need to know total snakes= x+y+s+3 = 69   answer:69
<result>D</result>
There are 99 people that own pets. 15 people own only dogs, 10 people own only cats, 5 people own only cats and dogs, 3 people own cats, dogs and snakes. How many total snakes are there?