घर से बाजार तक (3) रास्ते हैं और बाजार से विद्यालय तक (4) रास्ते हैं। वापसी में वही रास्ता किसी भी चरण में नहीं लेना है। घर से विद्यालय जाकर वापस घर आने के तरीके कितने हैं?
There are (3) routes from home to market and (4) routes from market to school. On returning the same route must not be used in any stage. How many ways are there to go from home to school and return home?
Explanation opens after your attempt
A. (72) तरीके(72) ways
Concept
For going there are \(3 \times 4\) ways and for returning there are \(3 \times 2\) ways. The total is \(3 \times 4 \times 3 \times 2=72\).
Why this answer is correct
The correct answer is A. (72) तरीके / (72) ways. For going there are \(3 \times 4\) ways and for returning there are \(3 \times 2\) ways. The total is \(3 \times 4 \times 3 \times 2=72\).
Exam Tip
जाने के लिए \(3 \times 4\) और लौटने के लिए \(3 \times 2\) तरीके हैं। कुल \(3 \times 4 \times 3 \times 2=72\) है।
Login to save your score, XP, coins and progress.
