With repetition, the smallest is 22222 and the largest is 88888 Without repetition, the smallest is 23458 and the largest is 85432
33 = 27 with repetition, 3! = 3*2*1 = 6 without repetition.
By simply ordering the digits the largest is .5420
I take it that you want to make three digits numbers with 8,7,3, and 6 without repetition. The first digit cane be selected from among 4 digits, the second from 3 digits, the third digit from 2, hence the number of three digit numbers that can be formed without repetition is 4 x 3 x 2 = 24
15 of them.
30 without repetition (6P2) 66 with repetition (12C2)
To be irrational, it would have to have an infinite number of digits, without a periodic repetition.
check this answer before used but i dobelieve it is 169 possibilities
The largest number with no repetition of digits (if that is what is meant) is 9876543210. The "smallest" number with no repetition is the negative of that if we allow negative numbers so the difference is zero. If by "smallest" we mean non-negative number, the smallest number with no repetition is 0 so the difference is the original number, 9876543210. If by "smallest" we mean smallest positive number, the smallest positive number without repeating digits is .01, so the difference is 9876543209.99. The unambiguous way to write a number smaller than 1 is to prefix it with "0." To be extremely precise, if by "no repetition" you mean to require that form and to exclude 0.01 because there are two zeros, then the smallest positive number "without repetition" is 0.1 and the difference is 9876543209.9. Everything depends on exactly what is meant by the question. It is important to avoid ambiguity in mathematics - and in everything else.