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Odd Man Out

Aptitude

ODD MAN OUT -> EXERCISE

6. Find the odd man out :
1, 4, 9, 16, 23, 25, 36
 
  • A. 9
  • B. 23
  • C. 25
  • D. 36
Ans: B.
Sol.
Each of the given numbers except 23, is a perfect square.
 
7. Find the odd man out :
8, 27, 64, 100, 125, 216, 343
 
  • A. 27
  • B. 100
  • C. 125
  • D. 343
Ans: B.
Sol.
The pattern is 23, 33, 43, 53, 63, 73.
But, 100 is not a perfect cube.
 
8. Find the odd man out :
2, 5, 10, 17, 26, 37, 50, 64
 
  • A. 50
  • B. 26
  • C. 37
  • D. 64
Ans: D.
Sol.
The pattern is x2 + 1, where x = 1, 2, 3, 4, 5, 6, 7, 8 etc.
But 64 is out of pattern.
 
9. Find the odd man out :
385, 462, 572, 396, 427, 671, 264
 
  • A. 385
  • B. 427
  • C. 671
  • D. 264
Ans: B.
Sol.
In each number except 427, the middle digit is the sum of the other two.
 
10. Find the odd man out :
3, 5, 7, 12, 17, 19
 
  • A. 12
  • B. 13
  • C. 17
  • D. 19
Ans: A.
Sol.
Each of the number except 12, is a prime number.