AR - Different number systems — task. Maths CBSE Live product, Class 8 (2026-27).

Assertion (A):

The invention of zero was necessary for the development of modern positional number system

Reason (R):

Zero is the smallest positive integer used in counting sets of objects.

Choose the correct answer:

Both A and R are true, but R is not the correct explanation of A.
A is true, but R is false.
Both A and R are true, and R is the correct explanation of A.
A is false, but R is true

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10. AR - Different number systems

Question: