One box has 9 bolts, 3 white and 6 red; and another box has : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 20 Jan 2017, 00:29

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# One box has 9 bolts, 3 white and 6 red; and another box has

Author Message
Director
Joined: 03 Jul 2003
Posts: 652
Followers: 3

Kudos [?]: 91 [0], given: 0

One box has 9 bolts, 3 white and 6 red; and another box has [#permalink]

### Show Tags

29 Jan 2004, 12:33
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

One box has 9 bolts, 3 white and 6 red; and another box has 12 nuts, 5 white and 7 read. If I pick one bolt and a net from the respective boxes,
what is the probability of picking the same color bolt and nut?

What kind of probability question is this?
SVP
Joined: 30 Oct 2003
Posts: 1793
Location: NewJersey USA
Followers: 5

Kudos [?]: 98 [0], given: 0

### Show Tags

29 Jan 2004, 13:28
P = WB * WN + RB * RN

Picking Any bolt is independent of picking any nut
so p = 3/9 * 5/12 + 6/9 * 7/12 = 57/(12*9) = 19/36
29 Jan 2004, 13:28
Display posts from previous: Sort by