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MATHS (SOLVED IN STEPS) ODD MAN - 01

1. Find the odd man out. 1, 3, 9, 12, 19, 29
A. 12    B. 9    C. 1    D. 3
Answer : Option A
Explanation :
12 is an even number. All other given
numbers are odd

2. Find the odd man out. 24,36,52,72,96
A. 72          B. 52         C. 36         D. 24
Answer : Option B
Explanation :
All except 52 are multiples of 6

3.  Find the odd man out. 1, 8, 27, 64, 125, 196, 216, 343
A. 64              B. 196           C. 216          D. 1
Answer : Option B
Explanation :
The pattern is 1³, 2³, 3³, 4³, 5³, 6³, 7³
196 is not a perfect cube

4. Find the odd man out. 15, 25, 30, 51, 85, 90, 115
A. 15          B. 25           C. 51            D. 90
Answer : Option C
Explanation :
All except 51 are multiples of 5

5. Find the odd man out. 187, 264, 386, 473, 682, 781
A. 386         B. 187          C. 781        D. 682
Answer : Option A
Explanation :
In all numbers except 386, the middle digit is the sum of other two digits.

6. Find the odd man out. 12, 24, 34, 48, 64, 84
A. 48         B. 34          C. 24        D. 12
Answer : Option B
Explanation :
All numbers except 34 are multiples of 4

7. Find the odd man out. 362, 482, 551, 263, 344, 284
A. 362          B. 482          C. 551          D. 344
Answer : Option D
Explanation :
In all numbers except 344, the product of first and third digits is the middle digit.

8. Find the odd man out. 742, 743, 633, 853, 871, 990, 532
A. 532          B. 990         C. 633         D. 742
Answer : Option D
Explanation :
In all numbers except 742, the difference of third and first digit is the middle digit.

9. Find the odd man out. 6, 13, 18, 25, 30, 37, 40
A. 40                 B. 30                C. 37              D. 25
Answer : Option A
Explanation :
The difference between two successive terms from the beginning are 7, 5, 7, 5, 7, 5
Hence, in place of 40, right number is 37+5=42

10. Find the odd man out. 445, 221, 109, 46, 25, 11, 4
A. 25               B. 109             C. 46          D. 221
Answer : Option C
Explanation :
To obtain next number, subtract 3 from the previous number and divide the result by 2
445
(445-3)/2 = 221
(221-3)/2 = 109
(109-3)/2 = 53
(53-3)/2 = 25
(25-3)/2 = 11
(11-3)/2 = 4
Clearly, 53 should have come in place of 46 
MATHS (SOLVED IN STEPS ==> Ratio and Proportion
MATHS (SOLVED IN STEPS ==> Progressions
MATHS (SOLVED IN STEPS ==> Percentage
MATHS (SOLVED IN STEPS ==> Surds and Indices
MATHS (SOLVED IN STEPS ==> Calendar
MATHS (SOLVED IN STEPS ==> Square and cube
MATHS (SOLVED IN STEPS ==> Simplification
MATHS (SOLVED IN STEPS ==> Problems on Average
MATHS (SOLVED IN STEPS ==> HCF & LCM 
MATHS (SOLVED IN STEPS ==> Profit and Loss
MATHS (SOLVED IN STEPS ==> Problems on Trains 
MATHS (SOLVED IN STEPS ==> Problems on Age 
MATHS (SOLVED IN STEPS ==> Pipe and Cisterns
MATHS (SOLVED IN STEPS ==> ODD MAN
MATHS (SOLVED IN STEPS ==> TIME & WORK


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