IPMAT 2020 Question Paper IPM Rohtak Quantitative Aptitude. Solve questions from IPMAT 2020 Question Paper from IPM Rohtak and check the solutions to get adequate practice. The best way to ace IPMAT is by solving IPMAT Question Paper. To solve other IPMAT Question Papers, go here: IPM Question Paper
Question 10 : There are 12 copies of Beetles CDs, 7 copies of Pink Floyd CDs, 3 different CDs of Michael Jackson, and 2 different CDs of Madonna. Find the number of ways in which one or more than one CD can be selected?
For Beetles and Pink Floyd
Since we have copies of CD's only the number of CD's count, and not which beetle/ which pink gets picked
Decision making here is number of items
Beetle , 0 or 1 or ....., 12
Pink Floyd , 0 or 1 or ..... 7
For Michael Jackson (M1, M2, M3) - What I'm selecting matters
So, M1 is in or out (2 possibilities), and
M2 is in or out (2 possibilities). M3 is in or out (2 possibilities)
So, 2 × 2 × 2 = 8 ways for selecting Michael Jackson CD's
Similarly 2 × 2 = 4 ways for selecting Madonna CD's.
So, Beetle = 13 ways × Pink = 8 ways × Michael Jackson 8 ways × Madonna 4 ways
In this whole thing we are subtracting 1, Since that will be a possibility where nothing is selected.
(13 × 8 × 8 × 4) - 1
= 3327 ways.
Choice D is the correct answer.
CAT® (Common Admission Test) is a registered trademark of the Indian Institutes of Management. This website is not endorsed or approved by IIMs.
2IIM Online CAT Coaching
A Fermat Education Initiative,
58/16, Indira Gandhi Street,
Kaveri Rangan Nagar, Saligramam, Chennai 600 093