अंकों (0,1,2,3,4,5,6) से बिना पुनरावृत्ति (4)-अंकीय संख्याएं बनती हैं। संख्या (4000) से कम होनी चाहिए। कुल संख्याएं कितनी हैं?
Using the digits (0,1,2,3,4,5,6) without repetition (4)-digit numbers are formed. The number must be less than (4000). How many numbers are possible?
Explanation opens after your attempt
Correct Answer
B. (360) संख्याएं(360) numbers
Concept
The thousand place is one of (1,2,3) and the remaining three places have (6,5,4) choices. The total is \(3 \times 6 \times 5 \times 4=360\).
Why this answer is correct
The correct answer is B. (360) संख्याएं / (360) numbers. The thousand place is one of (1,2,3) and the remaining three places have (6,5,4) choices. The total is \(3 \times 6 \times 5 \times 4=360\).
Exam Tip
हजार स्थान (1,2,3) में से होगा और बाकी तीन स्थानों पर (6,5,4) विकल्प बचेंगे। कुल \(3 \times 6 \times 5 \times 4=360\) है।
Login to save your score, XP, coins and progress.