(6) विषयों में से (2) विषयों को पहले और दूसरे पीरियड में लगाने के तरीके कितने हैं?
In how many ways can (2) subjects from (6) subjects be placed in the first and second periods?
Explanation opens after your attempt
C. (30)
Concept
There are (6) choices for the first period and (5) for the second, so (30). Timetable order uses permutation.
Why this answer is correct
The correct answer is C. (30). There are (6) choices for the first period and (5) for the second, so (30). Timetable order uses permutation.
Exam Tip
पहले पीरियड के लिए (6) और दूसरे के लिए (5) विकल्प हैं इसलिए (30)। timetable order में permutation लगता है।
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