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In how many ways can first and second speakers be chosen from (14) participants?(14) प्रतिभागियों में से प्रथम और द्वितीय वक्ता चुनने के तरीके कितने हैं?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (182)(182)
First and second speakers are ordered positions, so ({}^{14}P_{2}=182). Speaking order uses permutation.पहला और दूसरा वक्ता अलग क्रम वाले स्थान हैं इसलिए ({}^{14}P_{2}=182)। speaking order में permutation लगता है।
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