The number of permutations of the 4 different letters, taken two at a time, is given by:
Answer:
The value of y is 48.
Step-by-step explanation:
You have to substitute the values into the equation :




Answer:
1. subtract 9 from z- z-9
2. add 9 and z - z+9
3. divide 9 by z - 9/z
4. multiply 9 by z - 9z
Step-by-step explanation:
Your welcome!
Brainliest Appreciated!
Answer:
DO u have a pic I could see for ABC
Step-by-step explanation: