Write the smallest number of different differrent digits formed by using the digits 3, 1, 0, 5 and 7.

Write the largest number of different differrent digits formed by using the digits 2, 4, 0, 3, 6 and 9.

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

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

Write the smallest 5-digit number having three different digits.

Write the smallest 5 -digit number having three different digits.

Write the smallest 8 - digit number having four different digits.

Write the smallest 7-digit number, using any five different digits.

Write the greatest and the smallest numbers of 4 digits that can be formed using the digits 0, 8, 7, 5; using each digit only once.