Concept-wise Practice

decreasing-sum MCQ Questions for Class 10

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

Practice Questions

1 questions tagged with decreasing-sum.

एक सीढ़ी में सबसे नीचे (96) ईंटें हैं और हर ऊपर वाली पंक्ति में (6) ईंटें कम हैं। (12) पंक्तियों में कुल कितनी ईंटें होंगी?

A staircase has (96) bricks in the bottom row and (6) fewer bricks in each upper row. How many bricks are there in (12) rows?

Explanation opens after your attempt
Correct Answer

C. (756)

Step 1

Concept

This is the decreasing AP \(96,90,84,\ldots\), and \(S_{12}=756\). Exam tip: treat a decrease as a negative common difference.

Step 2

Why this answer is correct

The correct answer is C. (756). This is the decreasing AP \(96,90,84,\ldots\), and \(S_{12}=756\). Exam tip: treat a decrease as a negative common difference.

Step 3

Exam Tip

यह घटती समान्तर श्रेणी \(96,90,84,\ldots\) है और \(S_{12}=756\)। परीक्षा में कमी को ऋणात्मक सार्व अंतर मानें।

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