Tammie has 10 cards numbered 1 through 10. If she deals two to Tarrell without replacing any of them, what is the

This topic has expert replies
Moderator
Posts: 7187
Joined: Thu Sep 07, 2017 4:43 pm
Followed by:23 members

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

Tammie has 10 cards numbered 1 through 10. If she deals two to Tarrell without replacing any of them, what is the probability that Tarrell will get both a 2 and a 3?

A. 1/5
B. 1/45
C. 1/50
D. 1/90
E. 14/45



OA B

Source: Princeton Review
Source: — Problem Solving |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 8086
Joined: Sat Apr 25, 2015 10:56 am
Location: Los Angeles, CA
Thanked: 43 times
Followed by:29 members
BTGmoderatorDC wrote:
Mon Jan 18, 2021 4:49 pm
Tammie has 10 cards numbered 1 through 10. If she deals two to Tarrell without replacing any of them, what is the probability that Tarrell will get both a 2 and a 3?

A. 1/5
B. 1/45
C. 1/50
D. 1/90
E. 14/45



OA B

Solution:

The probability Tarrell will get a 2 followed by a 3 is 1/10 x 1/9 = 1/90. Similarly, the probability Tarrell will get a 3 followed by a 2 is also 1/10 x 1/9 = 1/90. Therefore, the probability that Tarrell will get both a 2 and a 3 (in any order) is 1/90 + 1/90 = 1/45.

Answer: B

Scott Woodbury-Stewart
Founder and CEO
[email protected]

Image

See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews

ImageImage