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Directions: Find the wrong term in the following number series.
18, 19.5, 41.5, 128, 513.5, 2588, 15534.5
  • a)
    41.5
  • b)
    513.5
  • c)
    2588
  • d)
    15334.5
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Directions: Find the wrong term in the following number series.18, 19...
Explanation:

To find the wrong term in the given number series, we need to identify the pattern followed by the series.

Let's analyze the given series step by step:

Step 1: 18, 19.5
The difference between the two terms is 1.5 (19.5 - 18 = 1.5)

Step 2: 19.5, 41.5
The difference between the two terms is 22 (41.5 - 19.5 = 22)

Step 3: 41.5, 128
The difference between the two terms is 86.5 (128 - 41.5 = 86.5)

Step 4: 128, 513.5
The difference between the two terms is 385.5 (513.5 - 128 = 385.5)

Step 5: 513.5, 2588
The difference between the two terms is 2074.5 (2588 - 513.5 = 2074.5)

Step 6: 2588, 15534.5
The difference between the two terms is 12946.5 (15534.5 - 2588 = 12946.5)

Pattern:

Upon analyzing the differences between consecutive terms, we observe that the differences are increasing in an irregular pattern. In the first two steps, the difference increases by 20.5 (22 - 1.5 = 20.5), then it increases by 64.5 (86.5 - 22 = 64.5), then by 299 (385.5 - 86.5 = 299), then by 1689 (2074.5 - 385.5 = 1689), and finally by 10658 (12946.5 - 2074.5 = 10658).

Identifying the Wrong Term:

By observing the pattern, we can conclude that the differences between consecutive terms are increasing irregularly. However, the last difference (10658) is significantly larger than the previous differences. This indicates that the term 15534.5 is the wrong term.

Conclusion:

The wrong term in the given number series is 15534.5 (option B).
Free Test
Community Answer
Directions: Find the wrong term in the following number series.18, 19...
The given series follows the pattern as shown below
18 x 1 + 1.5 = 19.5
19.5 x 2 + 2.5 = 41.5
41.5 x 3 + 3.5 = 128
128 x 4 + 4.5 = 516.5
516.5 x 5 + 5.5 = 2588
2588 x 6 + 6.5 = 15534.5
Therefore, 513.5 is the wrong term in the series.
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Question Description
Directions: Find the wrong term in the following number series.18, 19.5, 41.5, 128, 513.5, 2588, 15534.5a)41.5b)513.5c)2588d)15334.5Correct answer is option 'B'. Can you explain this answer? for CAT 2025 is part of CAT preparation. The Question and answers have been prepared according to the CAT exam syllabus. Information about Directions: Find the wrong term in the following number series.18, 19.5, 41.5, 128, 513.5, 2588, 15534.5a)41.5b)513.5c)2588d)15334.5Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for CAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: Find the wrong term in the following number series.18, 19.5, 41.5, 128, 513.5, 2588, 15534.5a)41.5b)513.5c)2588d)15334.5Correct answer is option 'B'. Can you explain this answer?.
Solutions for Directions: Find the wrong term in the following number series.18, 19.5, 41.5, 128, 513.5, 2588, 15534.5a)41.5b)513.5c)2588d)15334.5Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for CAT. Download more important topics, notes, lectures and mock test series for CAT Exam by signing up for free.
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