CSATPermutation, Combination & ProbabilityPermutation and Combination2023

ABCD is a square. One point on each of AB and CD; and two distinct points on each of BC and DA are chosen. How many distinct triangles can be drawn using any three points as vertices out of these six points?

A

16

B

18

C

20

D

24

Correct Answer: Option C

Explanation

1. **Analyze the Setup**: We have a square with points distributed on its sides: 1 on AB, 1 on CD, 2 on BC, and 2 on DA. Total distinct points = 1 + 1 + 2 + 2 = 6 points. 2. **Apply Previous Learning (Translation)**: Just like the 2017 questio

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