Question

Write the smallest 7 digit number having 4 different digits.

Answer 1

Answer :

To get smallest 7 digit number with 4 different digits we take smallest four digits = 0 , 1 , 2, 3

And we know smallest 7 digit number = 10,00,000

So,

And we know smallest 7 digit number with four different digits = 10,00,123 ( Ans )