Question

Find the smallest seven digit number having four different digits

Answer 1

HELLO MY DEAR FRIEND

SMALLEST SEVEN DIGIT NUMBER - 

1,000,000.

I HOPE THIS WILL HELP'S U............*-*

#✌  SWETHAPAVS✌ # 

Answer 2

I’m going to define them to be arabic numerals 0 through 9, without counting any other symbol or operation and stripping leading zeroes:

Therefore 1023456