[if the question can be an...] Data-Sufficiency:How many students are enrolled in Sastri`s Quant class? (I). If 3

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Data-Sufficiency:

How many students are enrolled in Sastri`s Quant class?

(I). If 3 more students sign up for the class and no one drops out, more than 35 students will have enrolled in the class.

(II). If 4 students drop out of the class and no more sign-up, fewer than 30 students will have enrolled in the class.

Solution:

Statement I alone is not sufficient, but I does imply that at least 33 students are enrolled in the class. Statement II alone is not sufficient, but II does imply that no more than 33 students are enrolled in the class.

Although neither statement alone is sufficient, the two statements taken together are sufficient to answer the question that the number of students enrolled in the class is 33.

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