यदि \(A=\{2,4,6,8,10\}\) है, तो (\mathcal{P}(A)) में ठीक (2) तत्व वाले समुच्चयों की संख्या कितनी है?

If \(A=\{2,4,6,8,10\}\), how many sets in (\mathcal{P}(A)) have exactly (2) elements?

Explanation opens after your attempt
Correct Answer

B. (10)

Step 1

Concept

The number of ways to choose exactly (2) elements is \(\binom{5}{2}=10\). Each choice becomes an element of the power set.

Step 2

Why this answer is correct

The correct answer is B. (10). The number of ways to choose exactly (2) elements is \(\binom{5}{2}=10\). Each choice becomes an element of the power set.

Step 3

Exam Tip

ठीक (2) तत्व चुनने की संख्या \(\binom{5}{2}=10\) है। हर चयन घात समुच्चय का एक तत्व बनता है।

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यदि \(A=\{2,4,6,8,10\}\) है, तो (\mathcal{P}(A)) में ठीक (2) तत्व वाले समुच्चयों की संख्या कितनी है? / If \(A=\{2,4,6,8,10\}\), how many sets in (\mathcal{P}(A)) have exactly (2) elements?

Correct Answer: B. (10). Explanation: ठीक (2) तत्व चुनने की संख्या \(\binom{5}{2}=10\) है। हर चयन घात समुच्चय का एक तत्व बनता है। / The number of ways to choose exactly (2) elements is \(\binom{5}{2}=10\). Each choice becomes an element of the power set.

Which concept should I revise for this Mathematics MCQ?

The number of ways to choose exactly (2) elements is \(\binom{5}{2}=10\). Each choice becomes an element of the power set.

What exam hint can help solve this Mathematics question?

ठीक (2) तत्व चुनने की संख्या \(\binom{5}{2}=10\) है। हर चयन घात समुच्चय का एक तत्व बनता है।