> 9999876 Actually, 9999876 has four different digits (6, 7, 8, 9). The largest 7-digit number with three different digits is 9999987.
312132 or 231213
423
333
The number of different 4-digit strings is 6*5*4*3 = 360
smallest 8 digit number with three different digits
Not necessarily. Consider 444. The digits are not different. The first and second digits are not multiples of 3 The first digit is not greater than the second digit. In spite of all that, 444 is a 3-digit number
The largest 3 digit number whose digits are all primes is 777. The largest 3 digit number with different prime digits is 753.
> 9999876 Actually, 9999876 has four different digits (6, 7, 8, 9). The largest 7-digit number with three different digits is 9999987.
.012 i win
It is 1,000,002
99,999,987
greatest number9999987
That would be 99987.
3
What is the units digit of the least whole number greater than 1000 whose digits are all different?
987? It is just a guess of course.