A student owns 15 pencils, 9 are mechanical pencils and 6 are wooden pencils. They pull a pencil out of their backpack randomly. The person beside them asks for a pencil and they randomly grab one. What is the probability that the first pencil they grabbed was mechanical and the second one was wooden.

A student owns 15 pencils, 9 are mechanical pencils and 6 are wooden pencils. They pull a pencil out of their backpack randomly. The person beside them asks for a pencil and they randomly grab one. What is the probability that the first pencil they grabbed was mechanical and the second one was wooden.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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