यदि (p(x)=mx+n), (p(-2)=5) और (p(3)=30), तो (m+n) क्या है?

If (p(x)=mx+n), (p(-2)=5) and (p(3)=30), what is (m+n)?

Author: Muft Shiksha Editorial Team Published:
Explanation opens after your attempt
Correct Answer

B. (15)

Step 1

Concept

Subtracting the two values gives (5m=25), so (m=5). From (-2m+n=5), (n=15), so (m+n=20), not (15).

Step 2

Why this answer is correct

The correct answer is B. (15). Subtracting the two values gives (5m=25), so (m=5). From (-2m+n=5), (n=15), so (m+n=20), not (15).

Step 3

Exam Tip

दोनों मान घटाने पर (5m=25) से (m=5) मिलता है। (-2m+n=5) से (n=15), इसलिए (m+n=20) नहीं बल्कि (20) है।

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Mathematics Answer, Explanation and Revision Hints

यदि (p(x)=mx+n), (p(-2)=5) और (p(3)=30), तो (m+n) क्या है? / If (p(x)=mx+n), (p(-2)=5) and (p(3)=30), what is (m+n)?

Correct Answer: B. (15). Explanation: दोनों मान घटाने पर (5m=25) से (m=5) मिलता है। (-2m+n=5) से (n=15), इसलिए (m+n=20) नहीं बल्कि (20) है। / Subtracting the two values gives (5m=25), so (m=5). From (-2m+n=5), (n=15), so (m+n=20), not (15).

Which concept should I revise for this Mathematics MCQ?

Subtracting the two values gives (5m=25), so (m=5). From (-2m+n=5), (n=15), so (m+n=20), not (15).

What exam hint can help solve this Mathematics question?

दोनों मान घटाने पर (5m=25) से (m=5) मिलता है। (-2m+n=5) से (n=15), इसलिए (m+n=20) नहीं बल्कि (20) है।