Form the largest and smallest 4-digit numbers using each of digits 7, 1, 0, 5 only once.

Write the smallest 5-digit numbers using the digits 0,2,4,6,8

Write all 3-digit numbers using the digit 2, 3, 5, taking each digit only once.

Make the greatest and the smallest: 4-digit numbers with the digit 4,1,0 using any one digit twice.

Using digits 2,4,6,0,5 write: (i) the smallest five -digit number using each digit only once. (ii) the largest six -digit number using the digit 0 twice and all the other digits only once. (iii) the largest seven-digit number using the digit 4 thrice and the other digits exactly once.

Write the largest and the smallest 7-digit number and also find how many 7-digit numbers are there in all.

Write the smallest 7-digit number having four different digits.

Make the greatest and the smallest: 5-digit numbers with the digits 3,5,7,9 using the digit 5 twice.

Find the difference between the greatest and least numbers that can be written using the digits 6, 2, 7, 4, 3 each only once.

What is the largest 5-digit number with unique digits?

How many unequal 5 -digit numbers can be formed using each digit of the number 11235 only once?