Q.3. How many chords can be drawn through 21 points on a circle?
To draw chords 2 points are required on the circle.
To know the number of chords on the circle , when points on the circle are 21.
Combinations =Number of chords
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
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