The sum of all the 4 -digit distinct numbers that can be formed with the digits 1 ,   2 ,   2 and…
The sum of all the -digit distinct numbers that can be formed with the digits and is:
Solution
Digits are
total distinct numbers
total numbers when
at unit place is
at unit place is
at unit place is
So, sum
Asked in: JEE Main 2021 (18 Mar Shift 1)
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