A geometric sequence has first term 1 and common ratio 2. What is the 6th term?
Answer and explanation
Correct answer: C. 32
- Step 1: a_n = a_1 q^(n-1).
- Step 2: a_6 = 1 x 2^5 = 32.
Answer
32.
Why not the others: 64 is the next term, one step too far; the other values treat the sequence as arithmetic or multiply by n.
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