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Two real numbers are chosen at random between 0 and 2. What is the probability that their sum is no more than 1?

 Oct 7, 2021
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Two real numbers are chosen at random between 0 and 2. What is the probability that their sum is no more than 1?    

 

Assuming the numbers are integers, the following are all the possible choices.     

 

       0 0    0 1    0 2     

       1 0    1 1    1 2     

       2 0    2 1    2 2     

 

The highlighted numbers are the pairs whose sum is no more than 1.     

 

Sum no more than 1       3     

All possible choices        9          ——>>    probability is 3 / 9  or  1 / 3     

                                                                   or, as a percentage,  33.33%     

.     

 Nov 13, 2025

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