शहर (A) से (B) तक (4) रास्ते और (B) से (C) तक (5) रास्ते हैं। वापसी में वही रास्ता किसी भी खंड पर नहीं लेना है। आने-जाने की कुल यात्राएँ कितनी होंगी?
There are (4) routes from city (A) to (B) and (5) routes from (B) to (C). On return, the same route cannot be used on either segment. How many round trips are possible?
Explanation opens after your attempt
B. (240)
Concept
The onward trip has \(4 \times 5\) choices. On return, (4) and (3) choices remain for the two segments.
Why this answer is correct
The correct answer is B. (240). The onward trip has \(4 \times 5\) choices. On return, (4) and (3) choices remain for the two segments.
Exam Tip
जाते समय \(4 \times 5\) विकल्प हैं। लौटते समय क्रमशः (4) और (3) विकल्प बचते हैं।
Login to save your score, XP, coins and progress.
