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UPCAT Mathematics practice question 16: What is the 8th term of the geometric sequence 3, 6, 12, 24, ...?

Correct answer

C. 384

The common ratio is 2, so a₈ = 3 × 2⁷ = 3 × 128 = 384.

What is the 8th term of the geometric sequence 3, 6, 12, 24, ...?

  1. 192
  2. 768
  3. 384Correct
  4. 1,536

Why C is correct

The common ratio is 2, so a₈ = 3 × 2⁷ = 3 × 128 = 384.

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