Question

write the smallest 8-digit number having four different digits​

Answer 1

Answer:

[ Write the smallest 8 -digit number having four different digits. Write all 3 -digit numbers using the digits 4,5,8 taking each digit only once. Write the greatest 4 -digit number using two different digits.] Write the smallest 7 -digit number having four different digits.

Answer 2

Answer:

10000023 is the correct answer