Respuesta :

It is the answer choice c)
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(11/18) * 250 = 152.78, which is about 153: Choice C.

There are 18 total disks, and 11 of the 18 are relevant for this question.

So, put 11/18 as a fraction and multiply it by 250 — because there are 250 total trials — and you will get 153.