(18) बिंदुओं से त्रिभुज बनाने हैं। यदि (10) बिंदु एक सीध में हैं तो केवल उन्हीं (10) बिंदुओं से बनने वाले असफल चयन कितने हैं?
Triangles are to be formed from (18) points. If (10) points are collinear then how many failed selections come only from those (10) points?
Explanation opens after your attempt
C. \(\binom{10}{3}\)
Concept
For a failed triangle (3) points are chosen from the (10) collinear points. So the number is \(\binom{10}{3}\).
Why this answer is correct
The correct answer is C. \(\binom{10}{3}\). For a failed triangle (3) points are chosen from the (10) collinear points. So the number is \(\binom{10}{3}\).
Exam Tip
असफल त्रिभुज के लिए (10) समरेखीय बिंदुओं में से (3) चुने जाते हैं। इसलिए संख्या \(\binom{10}{3}\) है।
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