यदि (n\(A\cup B\cup C\)=128), ठीक एक समुच्चय में (63) और तीनों में (11) तत्व हैं, तो ठीक दो समुच्चयों में कितने तत्व हैं?

If (n\(A\cup B\cup C\)=128), (63) elements are in exactly one set, and (11) are in all three sets, how many elements are in exactly two sets?

Explanation opens after your attempt
Correct Answer

B. (54)

Step 1

Concept

Exactly two is (128-63-11=54). Solve by dividing the union into three classes.

Step 2

Why this answer is correct

The correct answer is B. (54). Exactly two is (128-63-11=54). Solve by dividing the union into three classes.

Step 3

Exam Tip

ठीक दो (128-63-11=54) हैं। संघ को तीन वर्गों में बांटकर हल करें।

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यदि (n\(A\cup B\cup C\)=128), ठीक एक समुच्चय में (63) और तीनों में (11) तत्व हैं, तो ठीक दो समुच्चयों में कितने तत्व हैं? / If (n\(A\cup B\cup C\)=128), (63) elements are in exactly one set, and (11) are in all three sets, how many elements are in exactly two sets?

Correct Answer: B. (54). Explanation: ठीक दो (128-63-11=54) हैं। संघ को तीन वर्गों में बांटकर हल करें। / Exactly two is (128-63-11=54). Solve by dividing the union into three classes.

Which concept should I revise for this Mathematics MCQ?

Exactly two is (128-63-11=54). Solve by dividing the union into three classes.

What exam hint can help solve this Mathematics question?

ठीक दो (128-63-11=54) हैं। संघ को तीन वर्गों में बांटकर हल करें।