Permutation and Combination

Which of the following illustrates permutation?

• forming a committee

• assigning rooms to conference participants

• selecting posters to hang at the corridor

• choosing 4 books to read from 6 owned books

Which of the following illustrates permutation?

• Choosing 3 students to a group of 7 people

• Forming triangles from 4 distinct points

• Drawing a set of numbers from a lottery

• Winning in a contest

Getting the number of ways in arranging all the letters of the word "LOVELY" is an example of what type of permutation?

• Permutation taken all at a time

• Permutation taken r at a time

• Distinguishable Permutation

• Circular Permutation

What do you call this mathematical symbol "!"?

How many ways can we arrange 4 people in a row?

• 48

• 24

• 12

• 6

Which of the following is the correct formula for combination of objects?

Which of the following illustrates combination?

• Selecting 3 among 5 nurses to attend a conference

• Arranging the 5 contestants as 1st, 2nd and 3rd

• Opening a combination lock

• Entering PIN of your ATM

How many ways can we arrange the letters of the word "MAMA"?

How many handshakes can be made by 4 people?

How many 2-digit numbers can be made using the digits 1, 3, 5 and 7?

• 4

• 12

• 24

• 48