(11) किताबों में से (4) किताबें चुननी हैं जिनमें दो विशेष किताबें एक साथ नहीं आनी चाहिए। कितने तरीके हैं?

From (11) books (4) books are to be selected so that two special books do not appear together. How many ways are there?

Explanation opens after your attempt
Correct Answer

C. (285)

Step 1

Concept

Total ways are \(\binom{11}{4}=330\) and ways with both special books are \(\binom{9}{2}=36\). Hence the correct count is (294).

Step 2

Why this answer is correct

The correct answer is C. (285). Total ways are \(\binom{11}{4}=330\) and ways with both special books are \(\binom{9}{2}=36\). Hence the correct count is (294).

Step 3

Exam Tip

कुल \(\binom{11}{4}=330\) हैं और दोनों विशेष साथ हों तो \(\binom{9}{2}=36\) तरीके हैं। इसलिए (330-36=294) नहीं बल्कि सही गणना (294) है।

Question me issue ya doubt hai?

Answer, explanation, typing mistake ya suggestion directly hamari team ko bhejein. 📱Helpline (Call / WhatsApp): +91 7272824365

Related Mathematics Questions

FAQs

Mathematics Answer, Explanation and Revision Hints

(11) किताबों में से (4) किताबें चुननी हैं जिनमें दो विशेष किताबें एक साथ नहीं आनी चाहिए। कितने तरीके हैं? / From (11) books (4) books are to be selected so that two special books do not appear together. How many ways are there?

Correct Answer: C. (285). Explanation: कुल \(\binom{11}{4}=330\) हैं और दोनों विशेष साथ हों तो \(\binom{9}{2}=36\) तरीके हैं। इसलिए (330-36=294) नहीं बल्कि सही गणना (294) है। / Total ways are \(\binom{11}{4}=330\) and ways with both special books are \(\binom{9}{2}=36\). Hence the correct count is (294).

Which concept should I revise for this Mathematics MCQ?

Total ways are \(\binom{11}{4}=330\) and ways with both special books are \(\binom{9}{2}=36\). Hence the correct count is (294).

What exam hint can help solve this Mathematics question?

कुल \(\binom{11}{4}=330\) हैं और दोनों विशेष साथ हों तो \(\binom{9}{2}=36\) तरीके हैं। इसलिए (330-36=294) नहीं बल्कि सही गणना (294) है।