Concept-wise Practice

data consistency MCQ Questions for Class 11

data consistency se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

2 questions tagged with data consistency.

यदि (n(U)=210), (n\(A\cap B\)=52) और (n\(A^c\cup B^c\)=170) है, तो दिए गए आंकड़ों के बारे में क्या कहा जा सकता है?

If (n(U)=210), (n\(A\cap B\)=52), and (n\(A^c\cup B^c\)=170), what can be said about the given data?

Explanation opens after your attempt
Correct Answer

A. आंकड़े असंगत हैंThe data are inconsistent

Step 1

Concept

By De Morgan's law, (A^c\cup B^c=\(A\cap B\)^c), so its value should be (210-52=158). Since (170) is given, the data are inconsistent.

Step 2

Why this answer is correct

The correct answer is A. आंकड़े असंगत हैं / The data are inconsistent. By De Morgan's law, (A^c\cup B^c=\(A\cap B\)^c), so its value should be (210-52=158). Since (170) is given, the data are inconsistent.

Step 3

Exam Tip

डी मॉर्गन से (A^c\cup B^c=\(A\cap B\)^c), इसलिए इसका मान (210-52=158) होना चाहिए। (170) मिलने से आंकड़े असंगत हैं।

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यदि (n(U)=170), (n\(A\cap B\)=44) और (n\(A^c\cup B^c\)=146) है, तो दिए गए आंकड़ों के बारे में क्या कहा जा सकता है?

If (n(U)=170), (n\(A\cap B\)=44), and (n\(A^c\cup B^c\)=146), what can be said about the given data?

Explanation opens after your attempt
Correct Answer

A. आंकड़े असंगत हैंThe data are inconsistent

Step 1

Concept

By De Morgan's law, (A^c\cup B^c=\(A\cap B\)^c), so its value should be (170-44=126). Since (146) is given, the data are inconsistent.

Step 2

Why this answer is correct

The correct answer is A. आंकड़े असंगत हैं / The data are inconsistent. By De Morgan's law, (A^c\cup B^c=\(A\cap B\)^c), so its value should be (170-44=126). Since (146) is given, the data are inconsistent.

Step 3

Exam Tip

डी मॉर्गन से (A^c\cup B^c=\(A\cap B\)^c), इसलिए इसका मान (170-44=126) होना चाहिए। (146) मिलने से आंकड़े असंगत हैं।

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