यदि \(A=\{a,b,c,d,e,f\}\), तो (\mathcal{P}(A)) के कितने तत्वों में ठीक तीन तत्व होंगे और (a) नहीं होगा?

If \(A=\{a,b,c,d,e,f\}\), how many elements of (\mathcal{P}(A)) have exactly three elements and do not contain (a)?

Explanation opens after your attempt
Correct Answer

A. (10)

Step 1

Concept

After excluding (a), (5) elements remain. Choosing exactly (3) of them gives \(\binom{5}{3}=10\) ways.

Step 2

Why this answer is correct

The correct answer is A. (10). After excluding (a), (5) elements remain. Choosing exactly (3) of them gives \(\binom{5}{3}=10\) ways.

Step 3

Exam Tip

(a) को हटाने पर (5) तत्व बचते हैं। उनमें से ठीक (3) चुनने के \(\binom{5}{3}=10\) तरीके हैं।

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

यदि \(A=\{a,b,c,d,e,f\}\), तो (\mathcal{P}(A)) के कितने तत्वों में ठीक तीन तत्व होंगे और (a) नहीं होगा? / If \(A=\{a,b,c,d,e,f\}\), how many elements of (\mathcal{P}(A)) have exactly three elements and do not contain (a)?

Correct Answer: A. (10). Explanation: (a) को हटाने पर (5) तत्व बचते हैं। उनमें से ठीक (3) चुनने के \(\binom{5}{3}=10\) तरीके हैं। / After excluding (a), (5) elements remain. Choosing exactly (3) of them gives \(\binom{5}{3}=10\) ways.

Which concept should I revise for this Mathematics MCQ?

After excluding (a), (5) elements remain. Choosing exactly (3) of them gives \(\binom{5}{3}=10\) ways.

What exam hint can help solve this Mathematics question?

(a) को हटाने पर (5) तत्व बचते हैं। उनमें से ठीक (3) चुनने के \(\binom{5}{3}=10\) तरीके हैं।