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Help with a math problem?
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Author:  zwackerm [ Thu Mar 16, 2017 10:32 am ]
Post subject:  Help with a math problem?

If the odds of event A happening are 98/100, the odds of event B happening are 999/1000, and the odds of event C happening are 21/28, what are the odds of none of the events happening?

Author:  Alex Y. [ Thu Mar 16, 2017 11:05 am ]
Post subject:  Re: Help with a math problem?

(1-(98/100))*(1-(999/1000)*(1-(21/28))

Author:  zwackerm [ Thu Mar 16, 2017 11:53 am ]
Post subject:  Re: Help with a math problem?

That would be .24. Definitely wrong.

Author:  Shack [ Thu Mar 16, 2017 12:15 pm ]
Post subject:  Re: Help with a math problem?

Instead of multiplying the chance of each happening you multiply the chance of each not happening

Event A = 2/100 or .02
Event B = 1/1000 or .001
Event C = 7/28 or .25

.02 * .001 * .25 = .000005

Author:  _axiom [ Thu Mar 16, 2017 12:28 pm ]
Post subject:  Re: Help with a math problem?

Shack wrote:
Instead of multiplying the chance of each happening you multiply the chance of each not happening

Event A = 2/100 or .02
Event B = 1/1000 or .001
Event C = 7/28 or .25

.02 * .001 * .25 = .000005

That's what Alex wrote. zwackerm just didn't put it in the calculator as he should've.

Author:  zwackerm [ Thu Mar 16, 2017 1:18 pm ]
Post subject:  Re: Help with a math problem?

Shack wrote:
Instead of multiplying the chance of each happening you multiply the chance of each not happening

Event A = 2/100 or .02
Event B = 1/1000 or .001
Event C = 7/28 or .25

.02 * .001 * .25 = .000005

Thanks Shack and Alex! Sorry I misread your answer.

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