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Find out the wrong number in the following number series.
18, 45, 90, 180, 135, 67.5
  • a)
    45
  • b)
    135
  • c)
    90
  • d)
    67.5
  • e)
    180
Correct answer is option 'E'. Can you explain this answer?
Most Upvoted Answer
Find out the wrong number in the following number series.18, 45, 90, 1...
Identifying the Wrong Number in the Series
To find the wrong number in the given series, we need to analyze the pattern and logic behind the numbers provided. Let's break down the series step by step:

Step 1:
The series starts with 18 and then each subsequent number is obtained by multiplying the previous number by 2. So, the pattern is as follows:
18 * 2 = 36
36 * 2 = 72
72 * 2 = 144
144 * 2 = 288

Step 2:
However, in the series provided, after 180, the next number given is 135. This breaks the pattern of multiplying by 2, indicating that 135 is the wrong number in the series.
Therefore, the wrong number in the series is 135 (option B).
Free Test
Community Answer
Find out the wrong number in the following number series.18, 45, 90, 1...
18 * 2.5 = 45
45 * 2 = 90
90 * 1.5 = 135
135 * 1 = 135
135 * 0.5 = 67.5
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