Concept-wise Practice

cube-rule MCQ Questions for Class 11

cube-rule 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 cube-rule.

यदि \(f:{1,2,3}\to{1,8,27}\) को (f(x)=x-3) से परिभाषित किया गया है, तो (f) के क्रमित युग्म कौन-से हैं?

If \(f:{1,2,3}\to{1,8,27}\) is defined by (f(x)=x-3), which are the ordered pairs of (f)?

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Correct Answer

A. ({(1,1),(2,8),(3,27)})

Step 1

Concept

\(1^3=1\), \(2^3=8\), and \(3^3=27\). In exams, the first component is the input and the second is the output.

Step 2

Why this answer is correct

The correct answer is A. ({(1,1),(2,8),(3,27)}). \(1^3=1\), \(2^3=8\), and \(3^3=27\). In exams, the first component is the input and the second is the output.

Step 3

Exam Tip

\(1^3=1\), \(2^3=8\) और \(3^3=27\) हैं। परीक्षा में पहला घटक इनपुट और दूसरा घटक आउटपुट होता है।

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यदि \(f:{1,2,3,4}\to{1,8,27,64}\) और (f(x)=x-3) है, तो (f(4)) क्या होगा?

If \(f:{1,2,3,4}\to{1,8,27,64}\) and (f(x)=x-3), what is (f(4))?

Explanation opens after your attempt
Correct Answer

B. (64)

Step 1

Concept

(f(4)=43=64). In exams, calculate powers carefully.

Step 2

Why this answer is correct

The correct answer is B. (64). (f(4)=43=64). In exams, calculate powers carefully.

Step 3

Exam Tip

(f(4)=43=64) होगा। परीक्षा में घात का मान सावधानी से निकालें।

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