# Test

The teacher prepared a test with ten questions. The student has the option to choose one correct answer from the four (A, B, C, D). The student did not get a written exam at all. What is the probability that:

a) He answers half correctly.

b) He answers all correctly.

c) He does not answer either one answer correctly.

a) He answers half correctly.

b) He answers all correctly.

c) He does not answer either one answer correctly.

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#### To solve this example are needed these knowledge from mathematics:

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