# GATE Questions & Answers of Joint and Conditional Probability

## What is the Weightage of Joint and Conditional Probability in GATE Exam?

Total 4 Questions have been asked from Joint and Conditional Probability topic of Probability and Statistics subject in previous GATE papers. Average marks 1.75.

Parcels from sender S to receiver R pass sequentially through two post-offices. Each post-office has a probability $\frac{1}{5}$ of losing an incoming parcel, independently of all other parcels. Given that a parcel is lost, the probability that it was lost by the second post-office is_________.

A fair coin is tossed till a head appears for the first time. The probability that the number of required tosses is odd, is