JEE Advanced 2022 Mathematics question

The number of 4-digit integers in the closed interval [2022, 4482] formed by using the digits 0, 2, 3, 4, 6, 7 is .

Answer: 569

Solution

Digits may repeat. First digit 2: numbers from 2000 to 2777; those below 2022 are and (7 numbers), leaving 209. First digit 3: , all in

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

Question ID VK-033960