Multiple choice

In the following number series, two numbers are placed inside the brackets. Study the series carefully and select the correct option in relation to the series. $9, 18, 108, (1008), 10008, (1000008)$

  1. The first bracket number (from left) is incorrect and the second is correct.

  2. The first bracket number (from left) is correct and the second is false.

  3. Both bracket numbers are correct.

  4. Both bracket numbers are incorrect.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pattern: 9 × 2 = 18, 18 × 6 = 108. The multiplier increases by 4: 2, 6, 10, 14, 18. 108 × 10 = 1080 (not 1008). So the first bracket (1008) is incorrect. 1080 × 14 = 15120, not 10008. The pattern for the second bracket is unclear. The answer states the first bracket is incorrect and the second is correct, but 10008 doesn't fit 1080×14=15120. The series may have a different pattern.

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