Question

Eassyon the topic " coronavirus and its effect on people and economic of country" (250 words)​

Answer 1

Answer:

A 0 occurs for each time 5 appears as a factor of 100!. Now we can just count them:

5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100.

That’s 20, however, 25, 50, 75 and 100 each contribute 2 5′s making the total 24.

A more general procedure looks like

⌊1005⌋+⌊10052⌋+⌊10053⌋+...

where ⌊⌋ rounds down.

Note that after a while the terms become 0.