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2014년 11월 7일 금요일
IBM Sample Placement Paper
Country
US
Category
IT
Website
www.ibm.com
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BM Number series questions for practice
Find the odd man out.
1. 3, 5, 11, 14, 17, 21
A. 21
B. 17
C. 14
D. 3
.
Answer: Option C
Explanation:
Each of the numbers except 14 is an odd number. The number '14' is the only EVEN number.
.
2. 8, 27, 64, 100, 125, 216, 343
A. 27
B. 100
C. 125
D. 343
.
Answer: Option B
Explanation:
The pattern is 23, 33, 43, 53, 63, 73. But, 100 is not a perfect cube.
.
3. 10, 25, 45, 54, 60, 75, 80
A. 10
B. 45
C. 54
D. 75
.
Answer: Option C
Explanation:
Each of the numbers except 54 is multiple of 5.
.
4. 396, 462, 572, 427, 671, 264
A. 396
B. 427
C. 671
D. 264
.
Answer: Option B
Explanation:
In each number except 427, the middle digit is the sum of other two.
.
5. 6, 9, 15, 21, 24, 28, 30
A. 28
B. 21
C. 24
D. 30
.
Answer: Option A
Explanation:
Each of the numbers except 28, is a multiple of 3.Find the odd man out.
6. 1, 4, 9, 16, 23, 25, 36
A. 9
B. 23
C. 25
D. 36
.
Answer: Option B
Explanation:
Each of the numbers except 23, is perfect square.
.
7. 1, 4, 9, 16, 20, 36, 49
A. 1
B. 9
C. 20
D. 49
.
Answer: Option C
Explanation:
The pattern is 12, 22, 32, 42, 52, 62, 72. But, instead of 52, it is 20 which to be turned out.
.
8. 2, 5, 10, 17, 26, 37, 50, 64
A. 50
B. 26
C. 37
D. 64
.
Answer: Option D
Explanation:
(1*1)+1 , (2*2)+1 , (3*3)+1 , (4*4)+1 , (5*5)+1 , (6*6)+1 , (7*7)+1 , (8*8)+1
But, 64 is out of pattern.
.
9. 10, 14, 16, 18, 21, 24, 26
A. 26
B. 24
C. 21
D. 18
.
Answer: Option C
Explanation:
Each of the numbers except 21 is an even number.
.
10. 16, 25, 36, 72, 144, 196, 225
A. 36
B. 72
C. 196
D. 225
.
Answer: Option B
Explanation:
Each of the numbers except 72 is a perfect square.
Find the odd man out.
11. 331, 482, 551, 263, 383, 362, 284
A. 263
B. 383
C. 331
D. 551
.
Answer: Option B
Explanation:
In each number except 383, the product of first and third digits is the middle one.
.
12. 835, 734, 642, 751, 853, 981, 532
A. 751
B. 853
C. 981
D. 532
.
Answer: Option A
Explanation:
In each number except 751, the difference of third and first digit is the middle one.
.
13. 41, 43, 47, 53, 61, 71, 73, 81
A. 61
B. 71
C. 73
D. 81
.
Answer: Option D
Explanation:
Each of the numbers except 81 is a prime number.
.
14. 3, 5, 7, 12, 17, 19
A. 19
B. 17
C. 5
D. 12
.
Answer: Option D
Explanation:
Each of the numbers is a prime number except 12
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