2022 · Q116
There is a group of 5 people among which there is one couple. In how many ways can these 5 people be seated in a row having 5 chairs if the couple is to be seated next to each other?
general-mental-abilityquantitative-aptitude
- A24
- B48
- C60
- D120
Explanation
Treat the couple as a single unit: the 4 units (couple + 3 others) can be arranged in 4! = 24 ways. The couple can then swap seats among themselves in 2! = 2 ways. Total arrangements = 24 × 2 = 48.