There are 10 books on a shelf, of which 4 are paperbacks and 6 are hardbacks. How many possible selections of 5 books

This topic has expert replies
Moderator
Posts: 2058
Joined: Sun Oct 29, 2017 4:24 am
Thanked: 1 times
Followed by:5 members

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

There are 10 books on a shelf, of which 4 are paperbacks and 6 are hardbacks. How many possible selections of 5 books from the shelf contain at least one paperback and at least one hardback?

A) 75
B) 120
C) 210
D) 246
E) 252

Answer: D

Source: Official Guide

User avatar
Senior | Next Rank: 100 Posts
Posts: 30
Joined: Mon Nov 24, 2014 1:47 pm
Location: London
Hi GMATters,

Here is my video solution to this question:

https://www.youtube.com/watch?v=AJ4yOY4dtYk

Enjoy!

Rowan
Is Your GMAT Score Stuck in the 600s? This FREE 8-Video, 20-Page Guide Can Help.

https://privategmattutor.london/move-yo ... -the-700s/

PS have you seen the new GMAT Work and Rates guide? Comes with a free 8-video course.

https://yourgmatcoach.podia.com/courses ... s-problems

Learn more about Private GMAT Tutoring at: https://privategmattutor.london