Two variants of a test paper are distributed among 12 students. Nu | Filo
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Class 11

Math

Algebra

Permutations and Combinations

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Two variants of a test paper are distributed among 12 students. Number of ways of seating of the students in two rows so that the students sitting side by side by not have identical papers & those sitting in the same column have the same paper is  : 

Correct Answer: Option(d)
Solution:   Number of variants test
  Total number of students
  They can be arranged in ways.
As the students are seated in two rows.
  The probability of arranging the students so that near by students don't have identical papers

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