you roll two standard number cubes. What is the probability that the sum is odd, given that one of the number cubes shows a 4?

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01-05-2018
Mathematics

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you roll two standard number cubes. What is the probability that the sum is odd, given that one of the number cubes shows a 4?

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Please help with math

Haileyhails611 Haileyhails611 · Answer 1 · 2018-05-01T15:45:14+02:00

Haileyhails611 Haileyhails611

01-05-2018

if one is already rolled as a 4, then there are only 6 other total combinations to get.so what are sums to get an odd number?
4+1=5
4+3=7
4+5=9
so you have a 1/2 chance of getting an odd number, given that one of the dice is already a 4.

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