Let n be the number of ways in which 5 boys and 5 girls can stand in a queue in such a way that all the girls stand consecutively in the queue. Let m be the number of ways in which 5 boys and 5 girls can stand in a queue in such a way that exactly four girls stand consecutively in the queue. Then the value of $${m \over n}$$ is
Your Input ________
Answer
Correct Answer is 5
2
JEE Advanced 2014 Paper 1 Offline
Numerical
Let $${n_1}\, < {n_2}\, < \,{n_3}\, < \,{n_4}\, < {n_5}$$ be positive integers such that $${n_1}\, + {n_2}\, + \,{n_3}\, + \,{n_4}\, + {n_5}$$ = 20. Then the number of such destinct arrangements $$\,({n_1}\,,\,{n_2},\,\,{n_3},\,\,{n_4}\,,{n_5})$$ is
Your Input ________
Answer
Correct Answer is 7
3
JEE Advanced 2014 Paper 1 Offline
Numerical
Let $${n \ge 2}$$ be an integer. Take n distinct points on a circle and join each pair of points by a line segment. Colour the line segment joining every pair of adjacent points by blue and the rest by red. If the number of red and blue line segments are equal, then the value of n is
Your Input ________
Answer
Correct Answer is 5
4
JEE Advanced 2013 Paper 1 Offline
Numerical
Consider the set of eight vectors $$V = \left\{ {a\,\hat i + b\,\hat j + c\hat k:a,\,b,\,c\, \in \left\{ { - 1,\,1} \right\}} \right\}$$. Three non-coplanar vectors can be chosen from v in $${2^p}$$ ways. Then p is
Your Input ________
Answer
Correct Answer is 5
Questions Asked from Permutations and Combinations
On those following papers in Numerical
Number in Brackets after Paper Indicates No. of Questions