Test SeriesFree PYQsExamsPricing

JEE Advanced Mathematics question

MathematicsPermutations and CombinationsJEE Advanced

In a group of boys, the number of arrangements of 4 boys is 12 times the number of arrangements of 2 boys. The number of boys in the group is

Answer: (C)

Solution

With boys, . Since P_{4}$ =

See the full step-by-step solution

Create a free account to read the complete working (2 steps), and practise questions like this in a timed test.

Create a free account

Question ID VK-108145