Quant Exam  >  Quant Questions  >  Directions (21-25): In the following number s... Start Learning for Free
Directions (21-25): In the following number series only one number is wrong. Find out the wrong number. 
9050,       5675,       3478,       2147,       1418,       1077,       950
  • a)
    3478
  • b)
    1418
  • c)
    5675
  • d)
    2147
  • e)
    1077
Correct answer is option 'E'. Can you explain this answer?
Verified Answer
Directions (21-25): In the following number series only one number is ...
View all questions of this test
Most Upvoted Answer
Directions (21-25): In the following number series only one number is ...
Given number series:
9050, 5675, 3478, 2147, 1418, 1077, 950

Observations:
- The given series is a decreasing sequence of numbers.
- The difference between consecutive terms is decreasing gradually.
- The pattern is not clear at first glance.

Approach:
To find the wrong number in the series, we need to identify the pattern followed by the numbers and check if any number deviates from the pattern.

Pattern Analysis:
Let's calculate the differences between consecutive terms:

9050 - 5675 = 3375
5675 - 3478 = 2197
3478 - 2147 = 1331
2147 - 1418 = 729
1418 - 1077 = 341
1077 - 950 = 127

The differences do not form a clear pattern. However, if we observe closely, we can see that the differences are the cubes of consecutive odd numbers:

3375 = 15^3
2197 = 13^3
1331 = 11^3
729 = 9^3
341 = 7^3
127 = 5^3

Identifying the Wrong Number:
Now, let's apply the pattern to the given series:

9050 - 3375 = 5675
5675 - 2197 = 3478
3478 - 1331 = 2147
2147 - 729 = 1418
1418 - 341 = 1077
1077 - 127 = 950

The last term of the series should be 950 according to the pattern. However, the given series has a variable 'a' in place of the last digit. Therefore, the wrong number is the one with the variable 'a', which is 1077.

Conclusion:
The wrong number in the given series is 1077 (option E).
Explore Courses for Quant exam
Directions (21-25): In the following number series only one number is wrong. Find out the wrong number.9050, 5675, 3478, 2147, 1418, 1077, 950a)3478b)1418c)5675d)2147e)1077Correct answer is option 'E'. Can you explain this answer?
Question Description
Directions (21-25): In the following number series only one number is wrong. Find out the wrong number.9050, 5675, 3478, 2147, 1418, 1077, 950a)3478b)1418c)5675d)2147e)1077Correct answer is option 'E'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about Directions (21-25): In the following number series only one number is wrong. Find out the wrong number.9050, 5675, 3478, 2147, 1418, 1077, 950a)3478b)1418c)5675d)2147e)1077Correct answer is option 'E'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions (21-25): In the following number series only one number is wrong. Find out the wrong number.9050, 5675, 3478, 2147, 1418, 1077, 950a)3478b)1418c)5675d)2147e)1077Correct answer is option 'E'. Can you explain this answer?.
Solutions for Directions (21-25): In the following number series only one number is wrong. Find out the wrong number.9050, 5675, 3478, 2147, 1418, 1077, 950a)3478b)1418c)5675d)2147e)1077Correct answer is option 'E'. Can you explain this answer? in English & in Hindi are available as part of our courses for Quant. Download more important topics, notes, lectures and mock test series for Quant Exam by signing up for free.
Here you can find the meaning of Directions (21-25): In the following number series only one number is wrong. Find out the wrong number.9050, 5675, 3478, 2147, 1418, 1077, 950a)3478b)1418c)5675d)2147e)1077Correct answer is option 'E'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Directions (21-25): In the following number series only one number is wrong. Find out the wrong number.9050, 5675, 3478, 2147, 1418, 1077, 950a)3478b)1418c)5675d)2147e)1077Correct answer is option 'E'. Can you explain this answer?, a detailed solution for Directions (21-25): In the following number series only one number is wrong. Find out the wrong number.9050, 5675, 3478, 2147, 1418, 1077, 950a)3478b)1418c)5675d)2147e)1077Correct answer is option 'E'. Can you explain this answer? has been provided alongside types of Directions (21-25): In the following number series only one number is wrong. Find out the wrong number.9050, 5675, 3478, 2147, 1418, 1077, 950a)3478b)1418c)5675d)2147e)1077Correct answer is option 'E'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Directions (21-25): In the following number series only one number is wrong. Find out the wrong number.9050, 5675, 3478, 2147, 1418, 1077, 950a)3478b)1418c)5675d)2147e)1077Correct answer is option 'E'. Can you explain this answer? tests, examples and also practice Quant tests.
Explore Courses for Quant exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev