Combinations

The number of four letters that can be chosen from the alphabets is.

• 19540

• 35880

• 14950

• None of the above

Find the number of ways in which 3 components can be selected from a batch of 20 different components

• 6840

• 1140

• 402

• none of the above

Six friends are going to play a ball game. Each team has 3 players. How many different team combinations are possible?

• 120

• 6

• 18

• 20

Kimberly has seven colors of lanyards. She uses three different colors to make a key chain. How many different combinations can she choose?

• 210

• 5.040

• 6

• 35

Which of the following is an example of combination?

• Form a passcode with 4 digits

• Students line up in a queue to assembly

• Choose 4 students in a class committee

• Choose the chairperson, secretary and treasurer in a club