A geometric sequence has first term 3 and common ratio 2. What is the 6th term?
Answer and explanation
Correct answer: A. 96
- Step 1: a_n = a_1 q^(n-1).
- Step 2: a_6 = 3 x 2^5 = 96.
Answer
96.
Why not the others: 192 is the next term, one step too far; the other values treat the sequence as arithmetic or multiply by n.
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