TestHub
TestHub

Mathematics - Permutation & Combination Question with Solution | TestHub

MathematicsPermutation & CombinationArrangement under ConstraintEasy2 minPYQ_2014
MathematicsEasysingle choice

Three boys and two girls stand in a queue. The probability that the number of boys ahead of every girl is atleast one more than the number of girls ahead of her is

Options:

Answer:
A
Solution:

Either a girl start the sequence or will be at second position and will not acquire the last position as well.
Required probability= 3C2×2!×3!+ 2 C1×2!×3! 5!=12

Stream:JEE_ADVSubject:MathematicsTopic:Permutation & CombinationSubtopic:Arrangement under Constraint
2mℹ️ Source: PYQ_2014

Doubts & Discussion

Loading discussions...