GRE Quantitative Reasoning - Infinite Sequences

Step 1: Define what an infinite sequence is...

An infinite sequence is a sequence that is non-terminating.

Step 2: Determine if each sequence above is infinite...

For $(n!)^{(n!)}, n\ge 0$ , the sequence is always infinite because the set of factorials is infinite. Also, the set of values by raising two factorial powers together is also infinite, it never has an ending term.

For $-1\le x \le 5, x\in \mathbb{Z}$ , this sequence is FINITE!

For $\sqrt[n]{x}; x \in \mathbb{R},n \in \mathbb{N}$ , this sequence is FINITE!

Infinite Sequences

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