अंकों (0,1,2,3,4,5,6,7,8,9) से पुनरावृत्ति सहित (4)-अंकीय संख्याएं बनती हैं। संख्या (2000) से (5999) तक होनी चाहिए। कुल संख्याएं कितनी हैं?
Using the digits (0,1,2,3,4,5,6,7,8,9) with repetition (4)-digit numbers are formed. The number must be from (2000) to (5999). How many numbers are possible?
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Correct Answer
D. (4000) संख्याएं(4000) numbers
Concept
The thousand place is one of (2,3,4,5) and the remaining three places have (10) choices each. The total is \(4 \times 10^3=4000\).
Why this answer is correct
The correct answer is D. (4000) संख्याएं / (4000) numbers. The thousand place is one of (2,3,4,5) and the remaining three places have (10) choices each. The total is \(4 \times 10^3=4000\).
Exam Tip
हजार स्थान (2,3,4,5) में से होगा और बाकी तीन स्थानों पर (10) विकल्प हैं। कुल \(4 \times 10^3=4000\) है।
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