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Find the answers to two math problems on the SAT! ! !
In the first question, you didn't write the equation of H, and the topic said that the equation of H was given above.

The second question is a probability combination, which is not 24 in any case.

If it is a trainee with three plumbers, it is 8.

If it is a trainee with two plumbers, it is 12.

If you don't distinguish between plumbers and interns, that is, six people choose three, that is 20.

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