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Nixondutta
Joined: 24 Apr 2017
Last visit: 10 Aug 2018
Posts: 40
Given Kudos: 83
Status:The journey is always more beautiful than the destination
Affiliations: Computer Science
Location: India
Concentration: Statistics, Strategy
Schools: Columbia EMBA"19 Simon '19 Mason '19
GMAT 1: 570 Q40 V28
GPA: 3.14
Updated on: 09 Apr 2018, 01:23
Originally posted by Nixondutta on 08 Apr 2018, 23:53.
Last edited by Bunuel on 09 Apr 2018, 01:23, edited 1 time in total.
Last edited by Bunuel on 09 Apr 2018, 01:23, edited 1 time in total.
Edited the question.
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
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Question Stats:
78% (01:34) correct
22%
(01:58)
wrong
based on 204
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Roger wants to buy a television and DVD player. There are 9 available models of televisions and 6 available models of DVD players, but 3 of these television sets are not compatible with 2 of the DVD players. In how many ways can he buy a television and a compatible DVD player?
a. 48
b. 54
c. 62
d. 70
e. 72
Source- Time4education
a. 48
b. 54
c. 62
d. 70
e. 72
Source- Time4education
19 Apr 2018, 03:37
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Roger wants to buy a television and DVD player. There are 9 available models of televisions and 6 available models of DVD players, but 3 of these television sets are not compatible with 2 of the DVD players. In how many ways can he buy a television and a compatible DVD player?
a. 48
b. 54
c. 62
d. 70
e. 72
If you are in time crunch then we know that there are 54 total ways and there is just one option which is less than 54. So that has to be the answer.
a. 48
b. 54
c. 62
d. 70
e. 72
If you are in time crunch then we know that there are 54 total ways and there is just one option which is less than 54. So that has to be the answer.
General Discussion
09 Apr 2018, 00:12
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Nixondutta
Total number of ways of selecting one TV and one DVD
=9C1*6C1
Total number of ways of selecting not compatible TV and DVD players=3c1*2C1
many ways can he buy a television and a compatible DVD player=9C1*6C1-3c1*2C1=48
Ans A
