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Directions: What will come in place of the question mark (?) in the following number series?
5, 10 ,?, 1440 ,172800,
- a)30
- b)40
- c)50
- d)60
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Directions: What will come in place of the question mark (?) in the f...
Solution:
The given number series is: 5, 10, ?, 1440, 172800
Observations:
- The given series is not following any basic arithmetic or geometric pattern.
- However, if we look at the 4th and 5th terms, we can observe that the difference between them is a factor of 10. (i.e., 1440 = 10 × 144 and 172800 = 10 × 17280)
- This suggests that the missing term may also be a factor of 10.
Calculation:
Let's divide the 5th term by the 4th term to get the factor of 10:
172800 ÷ 1440 = 120
Now let's multiply the 3rd term by this factor of 10:
10 × 120 = 1200
Therefore, the missing term in the given series is 1200.
Verification:
Let's check if the series now follows a pattern:
5, 10, 1200, 1440, 172800
- The difference between the first two terms is 5.
- The difference between the second and third terms is 1190 (i.e., 1200 - 10).
- The difference between the third and fourth terms is 240.
- The difference between the fourth and fifth terms is a factor of 10 (i.e., 1440 = 10 × 144 and 172800 = 10 × 17280).
Therefore, the missing term in the given series is 1200, and the correct option is (D) 60.
The given number series is: 5, 10, ?, 1440, 172800
Observations:
- The given series is not following any basic arithmetic or geometric pattern.
- However, if we look at the 4th and 5th terms, we can observe that the difference between them is a factor of 10. (i.e., 1440 = 10 × 144 and 172800 = 10 × 17280)
- This suggests that the missing term may also be a factor of 10.
Calculation:
Let's divide the 5th term by the 4th term to get the factor of 10:
172800 ÷ 1440 = 120
Now let's multiply the 3rd term by this factor of 10:
10 × 120 = 1200
Therefore, the missing term in the given series is 1200.
Verification:
Let's check if the series now follows a pattern:
5, 10, 1200, 1440, 172800
- The difference between the first two terms is 5.
- The difference between the second and third terms is 1190 (i.e., 1200 - 10).
- The difference between the third and fourth terms is 240.
- The difference between the fourth and fifth terms is a factor of 10 (i.e., 1440 = 10 × 144 and 172800 = 10 × 17280).
Therefore, the missing term in the given series is 1200, and the correct option is (D) 60.
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Community Answer
Directions: What will come in place of the question mark (?) in the f...
5*2 =10
10*(2*3)=60
60*(2*3*4)=1440
1440(2*3*4*5)= 172,800
Hence correct answer is option D) 60
10*(2*3)=60
60*(2*3*4)=1440
1440(2*3*4*5)= 172,800
Hence correct answer is option D) 60
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Directions: What will come in place of the question mark (?) in the following number series?5, 10 ,?, 1440 ,172800,a)30b)40c)50d)60Correct answer is option 'D'. Can you explain this answer?
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Directions: What will come in place of the question mark (?) in the following number series?5, 10 ,?, 1440 ,172800,a)30b)40c)50d)60Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Directions: What will come in place of the question mark (?) in the following number series?5, 10 ,?, 1440 ,172800,a)30b)40c)50d)60Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: What will come in place of the question mark (?) in the following number series?5, 10 ,?, 1440 ,172800,a)30b)40c)50d)60Correct answer is option 'D'. Can you explain this answer?.
Directions: What will come in place of the question mark (?) in the following number series?5, 10 ,?, 1440 ,172800,a)30b)40c)50d)60Correct answer is option 'D'. Can you explain this answer? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Directions: What will come in place of the question mark (?) in the following number series?5, 10 ,?, 1440 ,172800,a)30b)40c)50d)60Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions: What will come in place of the question mark (?) in the following number series?5, 10 ,?, 1440 ,172800,a)30b)40c)50d)60Correct answer is option 'D'. Can you explain this answer?.
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