how many other fact families with dividends under 100 contain exactly three different digits? Name one multiplication fact in each of these families
34
36
172
874
102
34
36
How many strings of three digits are there? 000 to 999, or a total of 1000. How many strings of three digits contain the same three digits? That's 000, 111, 222 ... 999! ten in total. The difference is your answer: 1000-10 = 990.
172
102 is the smallest three digit number with different digits.
874
one hundred and thirty three
137?
102
smallest 8 digit number with three different digits
Six three-digit numbers contain only the digits 5 and 6. This is assuming you mean both the digits of 5 and 6. If not than 8, as it would include 555 and 666. 556, 565, 566, 655, 656, 665
> 9999876 Actually, 9999876 has four different digits (6, 7, 8, 9). The largest 7-digit number with three different digits is 9999987.