4 or 24
There are 4 characters.They can be arranged within themselves so they can be arranged in 24 ways.[Note : The formula for this is n! if there are n characters.]
Since there are 4 letters, they can be arranged 4! ways (4*3*2*1) or 24 ways.
If no digit can be repeated then there are 5 combinations, abcd, abce, abde, acde and bcde. If you regard abdc as different from abcd then each of the 5 basic sets could be arranged 24 ways and the total would be 120 combinations.
abcd
10
Six ways. Starting clockwise from A, they are: ABCD, ABDC, ACBD, ACDB, ADBC and ADCB. Any other way is simply a rotation of one of these.
Only one; A. At least concerning this one trait.
4
Without repeats, 24. With repeats, 256.
The polynomial ( abcd e - h^2 ) contains two terms: ( abcd e ) and ( -h^2 ). Each term is separated by the subtraction operator, indicating distinct components of the polynomial. Thus, the total number of terms is 2.
This depends on if you want repeats or not (or the state you are in) with repeats it is: 26x26x26x10x10= 1,757,600 without repeats it is: 26x25x24x10x9=1,560,000
how many ways can 8 letters be arranged