Q: How many three number digits are there when no digit is repeated?

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The largest number with no repeated digits is 9,876,543,210 although it is 10 digits long, the largest 3 digit number with no repeated digits is 987

102

It is 99,887,765

There are only two smaller 3-digit numbers and both of them have repeated digits.

Repeated twice means we're allowed three of them. That would be 88,866,644. If you really meant repeated, that would be 88,664,420

Related questions

The largest number with no repeated digits is 9,876,543,210 although it is 10 digits long, the largest 3 digit number with no repeated digits is 987

102

It is 99,887,765

It is possible to create a 3-digit number, without repeated digits so the probability is 1.

There are only two smaller 3-digit numbers and both of them have repeated digits.

757

Repeated twice means we're allowed three of them. That would be 88,866,644. If you really meant repeated, that would be 88,664,420

Using the digits of 1345678, there are 210 three digit numbers in which no digit is repeated.

27 three digit numbers from the digits 3, 5, 7 including repetitions.

102 is the smallest three digit number with different digits.

1

24+24+12+4=64.