Civil Service Exam Reviewer · Logical Reasoning · medium

Find the missing number: 8 : 504 :: 6 : 210 :: 5 : ?

  1. 120
  2. 51
  3. 30
  4. 24

Answer

A. 120

Solution

Rule: each number is paired with n³ − n. Check: 8 → 504 and 6 → 210. So 5 → 120.

More Logical Reasoning questions

  1. Find the missing number: 11 : 1332 :: 3 : 28 :: 7 : ?
  2. Find the missing number: 5 : 24 :: 3 : 8 :: 8 : ?
  3. Find the missing number: 5 : 51 :: 4 : 33 :: 12 : ?
  4. Find the missing number: 12 : 169 :: 11 : 144 :: 8 : ?
  5. Figure Series 25: Study the series of four figures in the image. Which option (A, B, C or D) comes NEXT in the series?
  6. Figure Series 24: Study the series of four figures in the image. Which option (A, B, C or D) comes NEXT in the series?
  7. Figure Series 23: Study the series of four figures in the image. Which option (A, B, C or D) comes NEXT in the series?
  8. Figure Series 22: Study the series of four figures in the image. Which option (A, B, C or D) comes NEXT in the series?
  9. Figure Series 21: Study the series of four figures in the image. Which option (A, B, C or D) comes NEXT in the series?
  10. Figure Series 20: Study the series of four figures in the image. Which option (A, B, C or D) comes NEXT in the series?

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