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Probably of Carl solving the 10 problems if there's 20 to study and he knows 15 and ten of the 20 are on the test.

Respuesta :

Answer:

1/3

Step-by-step explanation:

Probability of solving ten problems by Carl

Given

Total number of problems = 20

Number of problems studied by Carl = 15

Number of problems out of the 20 set of problem coming in test is 10

Case I - All ten problems come from the set of known 15 question

10/15 * 10/20 = 1/3

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