JEE Main Mathematics question
Statement 1: The number of different car licence plates that can be constructed if the licences contain three letters of the English alphabet followed by a three digit number is (if repetitions are allowed). Statement 2: The number of permutations of different things taken at a time when each things may be repeated any number of times is .
Answer: (B)
Solution
The three letters, with repetition allowed, can be chosen in ways, and a three-digit number ( to ) can be chosen in ways, so Statement 1 is true. Statement 2 is the standard result that places can be filled from things with repetition in ways, so it is true. It
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account