The largest digit number having three different digits is

Explanation:

Correct option is (C)

Identify the digits
Form largest digit number using three different digits
As a result, the greatest numbers  and  should be used.
To form a digit number, use one or two digits more than once.

Arrange the digits in descending order
Use digit  three times, as it is the largest of the digits.
To form the greatest number, write the remaining two digits in descending order.

So, the largest digit number formed with three different digits  is .

Final Answer:
Hence, the correct option is (c) i.e. .