(9) बिंदुओं में से कोई (3) एक सीध में नहीं हैं। कितने वृत्त बन सकते हैं?
There are (9) points, no (3) of which are collinear. How many circles can be formed?
Explanation opens after your attempt
C. (84)
Concept
A circle is determined by (3) points. Hence \(\binom{9}{3}=84\) is correct.
Why this answer is correct
The correct answer is C. (84). A circle is determined by (3) points. Hence \(\binom{9}{3}=84\) is correct.
Exam Tip
एक वृत्त (3) बिंदुओं से निर्धारित होता है। इसलिए \(\binom{9}{3}=84\) सही है।
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