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How many (6)-digit numbers can be formed from digits (0,1,2,3,4,5,6,7,8,9) without repetition if the digits are in strictly increasing order?अंकों (0,1,2,3,4,5,6,7,8,9) से बिना पुनरावृत्ति कितनी (6)-अंकीय संख्याएं बनेंगी जिनके अंक सख्ती से बढ़ते क्रम में हों?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (84)(84)
In increasing order, each chosen set gives only one arrangement, and including (0) would not give a (6)-digit number. So choose (6) digits from (1) to (9).बढ़ते क्रम में हर चुने हुए समूह की केवल एक व्यवस्था होती है, और (0) शामिल होने पर संख्या (6)-अंकीय नहीं रहेगी। इसलिए (1) से (9) में से (6) अंक चुनें।
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