Question

1. How many numbers between 20,000 and 30,000 can
formed by using the digits 2,3,5,6,7, if each digit​

Answer 1

Answer:

Since the numbers are > 20000 and <30000 1st1st place can be only 2.

Remaining 4 places can be occupied by any of the 5 digits.

∴∴ Required no. of numbers = 54=625