If you don't repeat, 20. If you do, 58.
99999
There are 3,265,920 numbers that can be formed using all the digits. The answer to the question will depend on which one of these.
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.
Using the digits of 1345678, there are 210 three digit numbers in which no digit is repeated.
8.
99999
48 of them if digits may not be repeated. 100 if they can.
There are 3,265,920 numbers that can be formed using all the digits. The answer to the question will depend on which one of these.
There are 60480 numbers.
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
There are 4^6 = 4096 such numbers.
depends on your answer
If the digits are all different then 18. Otherwise, 192.
15 of them.
Using the digits of 1345678, there are 210 three digit numbers in which no digit is repeated.
27