यदि \(U={x:x\in\mathbb{Z},-5\le x\le 15}\) और \(A={x:x\in U,x\equiv 2 \pmod{5}}\), तो (n(A')) क्या है?

If \(U={x:x\in\mathbb{Z},-5\le x\le 15}\) and \(A={x:x\in U,x\equiv 2 \pmod{5}}\), what is (n(A'))?

Explanation opens after your attempt
Correct Answer

A. (17)

Step 1

Concept

\(A=\{-3,2,7,12\}\), so (n(A)=4). Since (U) has (21) elements, (n(A')=17).

Step 2

Why this answer is correct

The correct answer is A. (17). \(A=\{-3,2,7,12\}\), so (n(A)=4). Since (U) has (21) elements, (n(A')=17).

Step 3

Exam Tip

\(A=\{-3,2,7,12\}\) है, इसलिए (n(A)=4)। (U) में (21) सदस्य हैं, अतः (n(A')=17) है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(U={x:x\in\mathbb{Z},-5\le x\le 15}\) और \(A={x:x\in U,x\equiv 2 \pmod{5}}\), तो (n(A')) क्या है? / If \(U={x:x\in\mathbb{Z},-5\le x\le 15}\) and \(A={x:x\in U,x\equiv 2 \pmod{5}}\), what is (n(A'))?

Correct Answer: A. (17). Explanation: \(A=\{-3,2,7,12\}\) है, इसलिए (n(A)=4)। (U) में (21) सदस्य हैं, अतः (n(A')=17) है। / \(A=\{-3,2,7,12\}\), so (n(A)=4). Since (U) has (21) elements, (n(A')=17).

Which concept should I revise for this Mathematics MCQ?

\(A=\{-3,2,7,12\}\), so (n(A)=4). Since (U) has (21) elements, (n(A')=17).

What exam hint can help solve this Mathematics question?

\(A=\{-3,2,7,12\}\) है, इसलिए (n(A)=4)। (U) में (21) सदस्य हैं, अतः (n(A')=17) है।