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A set of numbers has the property that for any number t in the set, t + 2 is in the set. If –1 is in the set, which of the following must also be in the set? I. –3 II. 1 III. 5 A. I only B. II only C. I and II only D. II and III only E. I, II, and III
Once again, little confusing . The statement says for any t, t+2 should be in the set, it does not say for any t+2, t should be in the set. For that reasons, i would go for 1 and 5 to be in the set, Hence answer should be D.
Pls post the QA soon vivektripathi, i would like to know of this is the right thinking ....