(7) symbols से repetition allowed (5)-character passwords बनते हैं। Count \(7^5\) क्यों है?
(5)-character passwords are formed from (7) symbols with repetition allowed. Why is the count \(7^5\)?
Explanation opens after your attempt
A. हर स्थान पर (7) independent choices हैंEach position has (7) independent choices
Concept
When repetition is allowed, a selected symbol remains available again. In exams use the power rule for independent positions.
Why this answer is correct
The correct answer is A. हर स्थान पर (7) independent choices हैं / Each position has (7) independent choices. When repetition is allowed, a selected symbol remains available again. In exams use the power rule for independent positions.
Exam Tip
Repetition allowed होने पर selected symbol फिर उपलब्ध रहता है। परीक्षा में independent positions में power rule लगाएं।
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