एक (3)-स्थान पासवर्ड में प्रत्येक स्थान पर (4) प्रतीक उपलब्ध हैं। लगातार दो प्रतीक समान नहीं हो सकते। कुल पासवर्ड कितने हैं?
In a (3)-place password (4) symbols are available at each place. No two consecutive symbols can be the same. How many passwords are possible?
Explanation opens after your attempt
D. (36) पासवर्ड(36) passwords
Concept
There are (4) choices for the first place and (3) choices for each of the next two places. The total is \(4 \times 3 \times 3=36\).
Why this answer is correct
The correct answer is D. (36) पासवर्ड / (36) passwords. There are (4) choices for the first place and (3) choices for each of the next two places. The total is \(4 \times 3 \times 3=36\).
Exam Tip
पहले स्थान के लिए (4) विकल्प हैं और अगले दो स्थानों के लिए (3) विकल्प हैं। कुल \(4 \times 3 \times 3=36\) है।
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