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Question
In how many ways, can a student choose a program of 5 courses, if 9 courses are available and 2 specific courses are compulsory for every student?
In how many ways, can a student choose a program of 5 courses, if 9 courses are available and 2 specific courses are compulsory for every student?
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Solution
The correct option is C 35
Total number of available courses =9
Out of these 5 courses have to be chosen it is given that 2 courses are compulsory for every student i.e., you have to choose on, courses instead of 5, out of 7 instead of 9.
It can be done in 7C3 ways =7×6×56=35 ways.
Total number of available courses =9
Out of these 5 courses have to be chosen it is given that 2 courses are compulsory for every student i.e., you have to choose on, courses instead of 5, out of 7 instead of 9.
It can be done in 7C3 ways =7×6×56=35 ways.
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