take two digits, say 2 and 3. Make 4-digit numbers using both thedigits equal number of times.
which is the greatest number
which is the smallest number
How many different numbers can you make in all
Let Two digits-2 and 3.
Greatest four digit number-3322
Smallest four digit number-2233
Different numbers-2323 , 3232 , 2233 , 3322 , 2332 , 3223 ,