CA Foundation · Quantitative Aptitude · Permutations and Combinations
A restaurant in Kochi offers 4 types of starters, 6 types of main course and 3 types of desserts. A meal consists of one starter, one main course and one dessert. How many different meals are possible?
There are 72 possible meals. A meal needs one starter, one main course and one dessert chosen in succession, so the multiplication principle gives 4 × 6 × 3 = 72. Adding the choices would give 13, which wrongly treats them as alternatives.
- A13
- B72Correct
- C48
- D24
Explanation
By the multiplication principle, the choices are independent, so the number of meals is 4 × 6 × 3 = 72. Adding the numbers (4+6+3 = 13) is wrong because it treats the choices as alternatives rather than successive stages.
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