Answer:
15.
Step-by-step explanation:
Please consider the complete question.
You have to answer 2 essay questions for an exam. There are 6 essays to choose from. How many different groups of 2 essays could you possibly choose?
We will use combinations formula to solve our given problem.
The number of combination of n terms r terms chosen at a time is given by formula:






Therefore, there are 15 different groups of essays could you possibly choose.
The answer is 40 is 80% of 50 ☺
Answer:
67
Step-by-step explanation:
Adding 6 and 7 together equate to 13. You then switch the digits of 67 to 76 and the number is increased by 9.