Question

Guess me:

Using digits $0$ to $7$, write the greatest possible $7$-digit number (No digits to be repeated).

Answer 1

Write the greatest possible $7$-digit number by using digits $0$ to $7$.

Given digits: $0,1,2,3,4,5,6$ and $7$.

The descending order of the given digits is $7,6,5,4,3,2,1,0$

Hence, the greatest possible $7$-digit number by using digits $0$ to $7$without repetition is $7,65,4321$.