How many ways can a student select four questions from an exam containing 10 questions?

410 ways
Here, there are 4 choices per question, and 10 questions. Choosing an answer for each question is a sequential task, so there are 4 × 4 × 4 × 4 × 4 × 4 × 4 × 4 × 4 × 4=410 ways to answer.

How many ways can a student choose eight out of ten questions to answer on an exam?

How many ways are there to choose the 2 questions that aren’t answered? Since the first 3 questions must be answered, there are (72)=21 choices for the 2 questions that aren’t answered, so there are 21 ways to choose 8 of the 10 questions if your choice is required to include the first 3 questions.

What is the easiest way to answer questions?

Think Fast: 10 Ways To Be Prepared For Any Question

1. Listen Attentively. Listen carefully to the very end.
2. Focus On The Trigger Word.
3. Always Give The Short Answer First.
4. Know When To Stop.
5. Don’t Repeat A Negative Question.
6. Strengthen Your Weak Points.
7. Create A Few Slides For Some Answers.
8. Use A Structure.

How many ways can you select a committee of 5 students?

There are 252 ways to select a committee of five members from a group of 10 people.

How many ways can a committee of five students be chosen from a group of ten students?

252
5! Therefore, the number of ways of selecting a committee of 5 members from a group of 10 persons is 252.

How many ways you can choose one or more students from 3 students?

in 7 ways we can select the students……

How many choices does the student have if he must answer?

Therefore, the number of choices he has if he must answer at least four of the first five questions is = (5C4 x 7C5)+ (5C5 x 7C4)=140 choices. OR means Addition. AND mean Multiplication. A student is to answer 10 out of 12 questions in an exam, such that he must choose at least 4 from the first 5 questions.

How many questions must the student answer in the exam?

In the question, it is mentioned that the student must answer at least 4 of the first 5 questions. This means that the student has to answer a minimum of 4 out of the first 5 questions but, he can also answer 5 out of the first 5 questions.

What happens if a student answers 4 out of 5 questions?

If the student answers 4 out of the first 5 questions then, he has to answer 5 out of the remaining 7 questions (because the total number of questions are 12 and 9 out of which has to be answered.) If the student answers 5 out of the first 5 questions then, he/she has to answer 4 out of the remaining 7 questions.

What does 4 questions answered from the first 5 questions mean?

So four questions answered from the first five questions means there are five possibilities: The student could answer questions 1,2,3,4, or 1,2,3,5, or 1,2,4,5, or 1,3,4,5, or 2,3,4,5. In mathematics this is written as 5C4. The formula for solving these kind of questions is actually to factor the first num