Civil Service Exam Reviewer · Logical Reasoning · hard

Find the missing number: 73 : 110 :: 97 : 176 :: 31 : ?

1. 10
2. 12
3. 16
4. 44

Answer

D. 44

Solution

Rule: each number is paired with the number plus its reversal. Check: 73 → 110 and 97 → 176. So 31 → 44.

More Logical Reasoning questions

1. Find the missing number: 35 : 88 :: 62 : 88 :: 18 : ?
2. Find the missing number: 81 : 63 :: 51 : 36 :: 23 : ?
3. Find the missing number: 72 : 45 :: 76 : 9 :: 29 : ?
4. Find the missing number: 11 : 99 :: 13 : 143 :: 8 : ?
5. Find the missing number: 7 : 52 :: 8 : 67 :: 5 : ?
6. Find the missing number: 13 : 183 :: 6 : 43 :: 5 : ?
7. Find the missing number: 10 : 1001 :: 13 : 2198 :: 12 : ?
8. Find the missing number: 4 : 21 :: 13 : 183 :: 10 : ?
9. Find the missing number: 14 : 2745 :: 4 : 65 :: 6 : ?
10. Find the missing number: 7 : 344 :: 4 : 65 :: 13 : ?

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