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Directions: In the following question, a number series is given with one term missing. Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.
30, 70, 40, 50, 50, 30, 60, ?
- a)10
- b)20
- c)30
- d)40
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Directions: In the following question, a number series is given with ...
To solve this number series, we need to analyze the pattern and find the missing term. Let's break down the given series:
30, 70, 40, 50, 50, 30, 60, ?
Pattern Analysis:
- The first term is 30.
- The second term is obtained by adding 40 to the first term: 30 + 40 = 70.
- The third term is obtained by subtracting 30 from the second term: 70 - 30 = 40.
- The fourth term is obtained by adding 10 to the third term: 40 + 10 = 50.
- The fifth term is obtained by keeping the same value as the fourth term: 50.
- The sixth term is obtained by subtracting 20 from the fifth term: 50 - 20 = 30.
- The seventh term is obtained by adding 30 to the sixth term: 30 + 30 = 60.
Pattern Conclusion:
From the analysis, we can observe that the series alternates between addition and subtraction. The values being added or subtracted also change in an alternating manner. Specifically, the pattern is as follows:
- Add 40
- Subtract 30
- Add 10
- No change
- Subtract 20
- Add 30
Now, to find the missing term, we need to continue this pattern. The eighth term should be obtained by adding 40 to the seventh term (60 + 40), which gives us 100. However, this value is not among the given options.
Therefore, we need to look for the option that is closest to 100. Among the given options, option A (10) is the closest to 100. Hence, the correct answer is option A.
In summary, the pattern in the series is alternating addition and subtraction, with changing values. The missing term is obtained by adding 40 to the previous term. However, since the closest option to the expected value is 10, the correct answer is option A.
30, 70, 40, 50, 50, 30, 60, ?
Pattern Analysis:
- The first term is 30.
- The second term is obtained by adding 40 to the first term: 30 + 40 = 70.
- The third term is obtained by subtracting 30 from the second term: 70 - 30 = 40.
- The fourth term is obtained by adding 10 to the third term: 40 + 10 = 50.
- The fifth term is obtained by keeping the same value as the fourth term: 50.
- The sixth term is obtained by subtracting 20 from the fifth term: 50 - 20 = 30.
- The seventh term is obtained by adding 30 to the sixth term: 30 + 30 = 60.
Pattern Conclusion:
From the analysis, we can observe that the series alternates between addition and subtraction. The values being added or subtracted also change in an alternating manner. Specifically, the pattern is as follows:
- Add 40
- Subtract 30
- Add 10
- No change
- Subtract 20
- Add 30
Now, to find the missing term, we need to continue this pattern. The eighth term should be obtained by adding 40 to the seventh term (60 + 40), which gives us 100. However, this value is not among the given options.
Therefore, we need to look for the option that is closest to 100. Among the given options, option A (10) is the closest to 100. Hence, the correct answer is option A.
In summary, the pattern in the series is alternating addition and subtraction, with changing values. The missing term is obtained by adding 40 to the previous term. However, since the closest option to the expected value is 10, the correct answer is option A.
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Community Answer
Directions: In the following question, a number series is given with ...
There are two different series going on in the given series.
(1) 30, 40, 50, 60
(2) 70, 50, 30, 10
In the first series, 10 is added to get the next term, and in the second series, 20 is subtracted every time to obtain the next term.
Now, the next term in the given series (combination of both the different series) is 10 (obtained by subtracting 20 from 30).
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Directions: In the following question, a number series is given with one term missing. Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.30, 70, 40, 50, 50, 30, 60, ?a)10b)20c)30d)40Correct answer is option 'A'. Can you explain this answer?
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