Question

Write the largest and the smallest $8$-digit numbers using different digits.

Answer 1

For finding greatest $8$-digit numbers using different digits so place the greatest digit at the extreme left and place then decrease the digit corresponding to right.

$\therefore$the Greatest $8$-digit number$=9,87,65,432$

And for finding the smallest $8$-digit numbers using different digits so place the smallest digit at the extreme left and place then increase the digit corresponding to right. but by putting zero at crores place we cannot have a $8$-digit number.

$\therefore$the smallest $8$-digit number $=1,02,34,567$

Hence, the smallest and greatest $8$-digit number using different digits are $1,02,34,567\&9,87,65,432$respectively.