एक ग्रिड पथ को पहले (3) दाईं और (2) ऊपर चालों वाले बिंदु से होकर जाना है। कुल यात्रा में (7) दाईं और (4) ऊपर चालें हैं। ऐसे रास्ते कितने हैं?
A grid path must pass through a point reached after (3) right and (2) up moves. The total journey has (7) right and (4) up moves. How many such paths are there?
Explanation opens after your attempt
A. (150)
Concept
The first part has \(^{5}C_{3}\) paths and the second part has \(^{6}C_{4}\) paths. Total \(10\times15=150\).
Why this answer is correct
The correct answer is A. (150). The first part has \(^{5}C_{3}\) paths and the second part has \(^{6}C_{4}\) paths. Total \(10\times15=150\).
Exam Tip
पहले भाग में \(^{5}C_{3}\) और दूसरे भाग में \(^{6}C_{4}\) रास्ते हैं। कुल \(10\times15=150\)।
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