- A40320
- B384
- C96
- D768
Step-by-Step Solution
Treat each couple as a block: . Each block can be (H,W) or (W,H): . Total .
Answer: B) 384
Four married couples stand in a row for a photo so that every husband stands next to his wife. How many arrangements are possible?
Competition practicePermutations & Combinations
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Permutations & Combinations practice questions
More Permutations & Combinations practice
Fourteen points lie in a plane; exactly 6 of them are on one straight line and no other…How many 3-digit numbers have digits that strictly increase from left to right (for…Seven people sit around a round table. In how many seatings are Anil and Bharat NOT next…Words are formed from the letters of EQUATION using 3 vowels and 2 consonants, with no…All arrangements of the letters of SACHIN are listed in dictionary order. At which…