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If a hand sanitizer cleans 99.9% of bacteria if u use it 2 times does that make it 100%

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asked Feb 22, 2022 101k views

5 votes

If a hand sanitizer cleans 99.9% of bacteria if u use it 2 times does that make it 100%

Mathematics
high-school

LINGZHI FAN asked

by LINGZHI FAN

7.8k points

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1 Answer

7 votes

Answer:

It's true

Explanation:

I hope it helps you

Brian Hanechak answered Feb 26, 2022

by Brian Hanechak

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Suppose that everyone in the class has hand sanitizer. Suppose that Shafiq uses hand sanitizer and it only kills 25% of the bacteria on his hand. I shake his hand and a day later, mine still works 100%

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One squirt of hand sanitizer kills 99.99% of germs that means there is still 0.01% of germs left so if you use two squirt do you kill 100% of germs or do you kill 99.99of that 0.01%of germs that was left

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If a hand sanitizer cleans 99.9% of bacteria if u use it 2 times does that make it 100%

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