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Competitive Stats
Q62Section C (Part C)62 of 120

Supremum and infimum — bounds of a set defined by parity

Consider the following subset of real numbers

A={(1+(−1)n)n−1n:n is a positive integer}.A=\left\{(1+(-1)^n)n-\frac1n : n\text{ is a positive integer}\right\}.

Which of the following statements are true?

Multiple select: one or more options are correct. Select all of them, then submit — marks need the exact set.

Options

Select every correct option, then submit.