# Probability of Survival

## Survival Probability Of The 6th Fly that Attempt To Pass A Spider

**Problem**

A spider eats three flies a day. Until he fills his quota, he has an even chance of catching any fly that attempts to pass. A fly is about to make the attempt. What are the chances of survival, given that five flies have already made the attempt today?

A. 1/2 | C. 3/4 |

B. 1/4 | D. 2/3 |