How did early humans keep track of passing days?

By writing books

By counting stars

Through rituals

By observing natural events

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Q1.

What is the primary purpose of using sticks in early number systems?

Q2.

Which method involves using spoken sounds to count objects?

Q3.

What limitation does the Roman numeral system have?

Q4.

In the context of ancient number systems, what is 'one-to-one mapping'?