0 votes 0 votes A fair die with faces $\{1, 2, 3, 4, 5, 6\}$ is thrown repeatedly till $’3’$ is observed for the first time. Let $X$ denote the number of times the die is thrown. The expected value of $X$ is _______. Probability and Statistics gate2015-ec-3 numerical-answers probability-and-statistics probability expectation + – Milicevic3306 asked Mar 27, 2018 • retagged Mar 3, 2021 by Lakshman Bhaiya Milicevic3306 16.0k points 101 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.