यदि (|A|=7), तो (\mathcal{P}(A)) के कितने तत्वों में कम से कम (6) तत्व होंगे?

If (|A|=7), how many elements of (\mathcal{P}(A)) have at least (6) elements?

Explanation opens after your attempt
Correct Answer

B. (8)

Step 1

Concept

At least (6) elements means (6) or (7) elements. The count is \(\binom{7}{6}+\binom{7}{7}=8\).

Step 2

Why this answer is correct

The correct answer is B. (8). At least (6) elements means (6) or (7) elements. The count is \(\binom{7}{6}+\binom{7}{7}=8\).

Step 3

Exam Tip

कम से कम (6) तत्वों का अर्थ (6) या (7) तत्व है। संख्या \(\binom{7}{6}+\binom{7}{7}=8\) है।

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Mathematics Answer, Explanation and Revision Hints

यदि (|A|=7), तो (\mathcal{P}(A)) के कितने तत्वों में कम से कम (6) तत्व होंगे? / If (|A|=7), how many elements of (\mathcal{P}(A)) have at least (6) elements?

Correct Answer: B. (8). Explanation: कम से कम (6) तत्वों का अर्थ (6) या (7) तत्व है। संख्या \(\binom{7}{6}+\binom{7}{7}=8\) है। / At least (6) elements means (6) or (7) elements. The count is \(\binom{7}{6}+\binom{7}{7}=8\).

Which concept should I revise for this Mathematics MCQ?

At least (6) elements means (6) or (7) elements. The count is \(\binom{7}{6}+\binom{7}{7}=8\).

What exam hint can help solve this Mathematics question?

कम से कम (6) तत्वों का अर्थ (6) या (7) तत्व है। संख्या \(\binom{7}{6}+\binom{7}{7}=8\) है।