यदि \(A=\{1,2,3,4,5\}\), तो कम से कम (4) सदस्य वाले उपसमुच्चयों की संख्या कितनी है?

If \(A=\{1,2,3,4,5\}\), how many subsets have at least (4) elements?

Explanation opens after your attempt
Correct Answer

B. (6)

Step 1

Concept

There are \(\binom{5}{4}=5\) four-element subsets and (1) five-element subset. Total is (5+1=6).

Step 2

Why this answer is correct

The correct answer is B. (6). There are \(\binom{5}{4}=5\) four-element subsets and (1) five-element subset. Total is (5+1=6).

Step 3

Exam Tip

चार-सदस्यीय उपसमुच्चय \(\binom{5}{4}=5\) और पांच-सदस्यीय (1) है। कुल (5+1=6) है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3,4,5\}\), तो कम से कम (4) सदस्य वाले उपसमुच्चयों की संख्या कितनी है? / If \(A=\{1,2,3,4,5\}\), how many subsets have at least (4) elements?

Correct Answer: B. (6). Explanation: चार-सदस्यीय उपसमुच्चय \(\binom{5}{4}=5\) और पांच-सदस्यीय (1) है। कुल (5+1=6) है। / There are \(\binom{5}{4}=5\) four-element subsets and (1) five-element subset. Total is (5+1=6).

Which concept should I revise for this Mathematics MCQ?

There are \(\binom{5}{4}=5\) four-element subsets and (1) five-element subset. Total is (5+1=6).

What exam hint can help solve this Mathematics question?

चार-सदस्यीय उपसमुच्चय \(\binom{5}{4}=5\) और पांच-सदस्यीय (1) है। कुल (5+1=6) है।