Question
150, 900, 300, 1800, 600, 3700,
1200 In the following number series, only one number is wrong. Find out the wrong number.Solution
The pattern of the series is: 150 × 6 = 900 900 ÷ 3 = 300 300 × 6 = 1800 1800 ÷ 3 = 600 600 × 6 = 3600 3600 ÷ 3 = 1200
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