How many different arrangements of distinct books are possible on a shelf?
Answer and explanation
Correct answer: D. 120
- Step 1: The number of distinct linear arrangements of distinct objects is given by .
- Step 2: For , expand the factorial product: .
- Step 3: Multiply the factors: .
Answer
120.
Practise more Permutations and combinations.
Free questions with an explanation for every one, and full timed WBJEE mock tests.
More Permutations and combinations questions
- In how many ways can a committee of be chosen from people?
- In how many ways can a committee of be chosen from people?
- In how many ways can a committee of be chosen from people?
- Four men and four women (including two particular women, and ) are to be seated in a row so that no two men sit next to each othe…
- In how many ways can a committee of be chosen from people?
- How many different arrangements of distinct books are possible on a shelf?