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How many (3)-digit numbers can be formed from digits (4,5,6) if repetition is allowed?अंकों (4,5,6) से पुनरावृत्ति की अनुमति होने पर कितनी (3)-अंकीय संख्याएँ बनेंगी?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (27)(27)
There are (3) choices for each of the three places, so (3^3=27). With repetition allowed, choices remain the same at every place.तीनों स्थानों पर (3) विकल्प हैं इसलिए (3^3=27)। repetition allowed हो तो हर स्थान पर समान विकल्प रहते हैं।
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