0
The first digit can be any one of 9. (any digit except zero)
For each of these . . .
The second digit can be any one of 9. (any digit except whatever the first one is)
For each of these . . .
The third digit can be any one of 8. (any digit except whatever the first 2 are)
Total possibilities = 9 x 9 x 8 = 648
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What is the 3 digit odd number between 2700 2800?
Since both of those numbers contains four digits, there are no three-digit numbers between them.
Using four different digits what is the least sum you can get when you add two digit numbers?
2222
How many six digit numbers can be formed using the digits 0123456789 Example equals 123456 or 098765?
The number of six digit numbers that you can make from ten different digits ifrepetitions of same digit on the six digit number is allowed is 1 000 000 numbers(including number 000 000).If no repetitions of the the same digit are allowed then you have:10P6 = 10!/(10-6)! = 151 200 different six digit numbers(six digit permutations form 10 different digits).
How many numbers can be formed using digits 1245?
Well honey, you've got 4 digits there, so you can form 4! (4 factorial) which is 24 numbers. That's right, you can make 24 different combinations with those digits. Math can be fun when you've got some sassy numbers to play with!
How many even four digit numbers can be made using 02356 where the first digit is cannot be 0 and no digits are repeated?
Assuming that 2356 is a different number to 2365, then: 1st digit can be one of four digits (2356) For each of these 4 first digits, there are 3 of those digits, plus the zero, meaning 4 possible digits for the 2nd digit For each of those first two digits, there is a choice of 3 digits for the 3rd digit For each of those first 3 digits, there is a choice of 2 digits for the 4tj digit. Thus there are 4 x 4 x 3 x 2 = 96 different possible 4 digit numbers that do not stat with 0 FM the digits 02356.
