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The word (BOOK) has (4) letters and (O) occurs twice. How many distinct arrangements are possible?शब्द (BOOK) में (4) अक्षर हैं और (O) दो बार आता है। इसके अलग-अलग arrangements कितने होंगे?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (12)(12)
Because two (O)'s are identical, arrangements are (\frac{4!}{2!}=12). For identical objects, divide by their factorial.दो समान (O) होने से व्यवस्थाएँ (\frac{4!}{2!}=12) होंगी। समान वस्तुओं के लिए factorial से भाग दें।
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