Video solution to 2 questions that were posted as part of solution to Q5 of Wizako’s Permutation Probability Chapter Test.
These 2 questions are to be solved using the same approach as we used for Q5.
Question 1
In how many ways can 3 boys and 3 girls be made to stand in a line such that no two boys stand together?
Question 2
In how many ways can 10 balls, 4 which are black and identical and 6 of which are white and identical be arranged in a line such that no two black balls are placed next to each other?
Wizako’s GRE coaching classes @ Chennai – https://classes.wizako.com/gre/gre-coaching-classes-chennai.shtml
GRE Permutation Probability practice questions with video explanation @ https://practice-questions.wizako.com/gre/quant/permutation-combination-probability/
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