CMA Foundation · Fundamentals of Business Mathematics and Statistics · Permutation and Combinations
What is the value of 8! / (6! × 2!)?
The value is 28. Since 8! divided by 6! reduces to 8 × 7 = 56, dividing this by 2! (which equals 2) gives 28. Forgetting the 2! in the denominator would wrongly give 56.
- A14
- B28Correct
- C56
- D24
Explanation
8!/6! = 8 × 7 = 56. Dividing by 2! = 2 gives 28. Option 56 results from forgetting to divide by 2!.
Did you get it right without looking?
One question tells you little. A timed set on Permutation and Combinations shows your real accuracy, how long you take and where you lose marks.
More Permutation and Combinations questions
- A firm has 9 employees. It wants to divide them into three teams of 3 each, the teams being unlabelled and identical in function (no team is…
- A bank in Chennai issues a 3-character code: the first is a letter chosen from A, B, C, D, E, and the next two are digits from 0 to 9 with r…
- A committee of 5 is to be formed from 7 men and 5 women so that it contains at least 2 women. In how many ways can this be done?
- How many zeros does 25! end with?
- A company in Pune has 8 candidates shortlisted and must choose a Manager, an Accountant and a Cashier, each from a different candidate. How …
- What is the value of (8! + 7!) / 7! ?