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The above pie chart gives the number of course offerings in the business school in the four subject areas: Management, Marketing, Accounting, and Finances, and some of their subareas.
Q. A student, randomly selecting two courses, has an approximately ______ chance of selecting one management and one tax accounting course.
  • a)
    2.9 %
  • b)
    5.9 %
  • c)
    12.6%
  • d)
    23.6%
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The above pie chart gives the number of course offerings in the busine...
Remember that you can use a basic calculator for the IR section of the test. In order to randomly select one management and one tax accounting course, there are two possibilities: first selecting a management course and then selecting a tax accounting course, or first selecting a tax accounting course and then selecting a management course. 

The overall probability is the sum of these two possible scenarios: 
45/200 * 26/199 + 26/200 * 45/199 = 2*45*26/200*199 = 5.9% 

If you chose 2.9%, don’t forget to consider both possible orders for selecting the two courses, not just one of them (45/200 * 26/199). If you chose 12.6%, you can’t just square the possibility of selecting either a management or a tax accounting course, because that leaves open the possibility of selecting two of one and neither of the other. If you chose 23.6%, remember that there are 200 total courses, not 100.
This question is part of UPSC exam. View all GMAT courses
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The above pie chart gives the number of course offerings in the busine...
Please send correct answer.
i guess
p(a¥b)=p(a)+p(b)-p(a₩b)
this is calulate exact answer.
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The above pie chart gives the number of course offerings in the business school in the four subject areas: Management, Marketing, Accounting, and Finances, and some of their subareas.Q. A student, randomly selecting two courses, has an approximately ______ chance of selecting one management and one tax accounting course.a)2.9 %b)5.9%c)12.6%d)23.6%Correct answer is option 'B'. Can you explain this answer?
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