CAT Exam > CAT Questions > Wrong Number Series: 318, 168, 78, 38, 18, 8,...
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Wrong Number Series: 318, 168, 78, 38, 18, 8, 3
- a)168
- b)38
- c)318
- d)78
- e)3
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Wrong Number Series: 318, 168, 78, 38, 18, 8, 3a)168b)38c)318d)78e)3Co...
The given number series is 318, 168, 78, 38, 18, 8, 3. We need to determine the pattern in the series and find the wrong number.
- Identifying the pattern:
Looking at the series, we can observe the following pattern:
- The first number is obtained by subtracting 150 from the next number.
- The second number is obtained by subtracting 90 from the next number.
- The third number is obtained by subtracting 40 from the next number.
- The fourth number is obtained by subtracting 20 from the next number.
- The fifth number is obtained by subtracting 10 from the next number.
- The sixth number is obtained by subtracting 5 from the next number.
- Finding the wrong number:
Now, let's apply the pattern to the given series:
318 - 150 = 168
168 - 90 = 78
78 - 40 = 38
38 - 20 = 18
18 - 10 = 8
8 - 5 = 3
We can see that the pattern holds true for all the numbers except the first number, which should be 168 instead of 318. Therefore, the wrong number in the series is 318.
- Conclusion:
The wrong number in the given series is 318.
- Identifying the pattern:
Looking at the series, we can observe the following pattern:
- The first number is obtained by subtracting 150 from the next number.
- The second number is obtained by subtracting 90 from the next number.
- The third number is obtained by subtracting 40 from the next number.
- The fourth number is obtained by subtracting 20 from the next number.
- The fifth number is obtained by subtracting 10 from the next number.
- The sixth number is obtained by subtracting 5 from the next number.
- Finding the wrong number:
Now, let's apply the pattern to the given series:
318 - 150 = 168
168 - 90 = 78
78 - 40 = 38
38 - 20 = 18
18 - 10 = 8
8 - 5 = 3
We can see that the pattern holds true for all the numbers except the first number, which should be 168 instead of 318. Therefore, the wrong number in the series is 318.
- Conclusion:
The wrong number in the given series is 318.
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Community Answer
Wrong Number Series: 318, 168, 78, 38, 18, 8, 3a)168b)38c)318d)78e)3Co...
The solution is :
8/2 – 1 = 3
18/2 - 1 = 8
38/2 – 1 = 18
78/2 – 1 = 38
168/2 – 1 = 83 ≠ 78
318/2 -1 = 158 ≠ 168
Therefore, wrong no. is 168
8/2 – 1 = 3
18/2 - 1 = 8
38/2 – 1 = 18
78/2 – 1 = 38
168/2 – 1 = 83 ≠ 78
318/2 -1 = 158 ≠ 168
Therefore, wrong no. is 168
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Question Description
Wrong Number Series: 318, 168, 78, 38, 18, 8, 3a)168b)38c)318d)78e)3Correct answer is option 'A'. 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 Wrong Number Series: 318, 168, 78, 38, 18, 8, 3a)168b)38c)318d)78e)3Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for CAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Wrong Number Series: 318, 168, 78, 38, 18, 8, 3a)168b)38c)318d)78e)3Correct answer is option 'A'. Can you explain this answer?.
Wrong Number Series: 318, 168, 78, 38, 18, 8, 3a)168b)38c)318d)78e)3Correct answer is option 'A'. 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 Wrong Number Series: 318, 168, 78, 38, 18, 8, 3a)168b)38c)318d)78e)3Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for CAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Wrong Number Series: 318, 168, 78, 38, 18, 8, 3a)168b)38c)318d)78e)3Correct answer is option 'A'. Can you explain this answer?.
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