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A postcard rolled into a pipe and taped can now hold books. Rolling makes it:

AStronger
BSmoother
CSmaller
DSofter
Answer & Solution
Correct answer: A. Stronger
1. The same paper now stands upright. 2. The round shape carries the weight. 3. So rolling makes it stronger. _Source: syllabus Mathematics Class II, Chapter 1, What is Long, What is Round._
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