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classroom MCQ Questions for Class 10

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Question 1/2 Easy Mathematics Quadratic Equations Word Problems and Applications Class 10 Level 40

एक कक्षा में (x) बेंच हैं और हर बेंच पर (x-1) विद्यार्थी बैठते हैं। कुल (72) विद्यार्थी हैं। बेंच की संख्या क्या है?

A class has (x) benches and (x-1) students sit on each bench. There are (72) students in total. What is the number of benches?

Explanation opens after your attempt
Correct Answer

B. (9)

Step 1

Concept

(x(x-1)=72) gives (x=9). The number of benches cannot be zero or negative.

Step 2

Why this answer is correct

The correct answer is B. (9). (x(x-1)=72) gives (x=9). The number of benches cannot be zero or negative.

Step 3

Exam Tip

(x(x-1)=72) से (x=9) मिलता है। बेंचों की संख्या शून्य या ऋणात्मक नहीं हो सकती।

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Question 2/2 Easy Mathematics Quadratic Equations Word Problems and Applications Class 10 Level 40

एक आयताकार कक्षा की लंबाई चौड़ाई से (8) मीटर अधिक है और क्षेत्रफल (240) वर्ग मीटर है। चौड़ाई क्या है?

A rectangular classroom has length (8) m more than its breadth and area (240) square m. What is its breadth?

Explanation opens after your attempt
Correct Answer

B. (12) मीटर(12) m

Step 1

Concept

If breadth is (x), then (x(x+8)=240), giving (x=12). Check dimensions by \(12 \times 20=240\).

Step 2

Why this answer is correct

The correct answer is B. (12) मीटर / (12) m. If breadth is (x), then (x(x+8)=240), giving (x=12). Check dimensions by \(12 \times 20=240\).

Step 3

Exam Tip

चौड़ाई (x) हो तो (x(x+8)=240), जिससे (x=12) है। आयामों की जाँच \(12 \times 20=240\) से करें।

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