Reasoning Class 5 Possible Combinations

Asked by AKSHAY GURU VARADHARAJAN · SRI CHAITANYA TECHNO SCHOOL, JAYANTI NAGAR.

In how many different ways can 4 friends sit around a circular table for lunch? (Note: In circular seating, rotations are considered the same).

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A 24
B 12
C 6
D 4

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Answer: C. 6

In a circle, we fix one person's spot to avoid counting the same "turn" twice. The formula is (n-1) × (n-2) × ... × 1. For 4 friends, it is 3 × 2 × 1 = 6.

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In how many different ways can 4 friends sit around a circular table for lunch? (Note: In circular seating, rotations are considered the same).

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