Mental ability-Series Completion Test Questions and Answers

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Q101
If in a certain language, MADRAS is coded as NBESBT, how is BOMBAY coded in that code ?
  • A CPNCBX
  • B CPNCBZ
  • C CPOCBZ
  • D CQOCBZ
Answer: Option B
Explanation: Each letter in the word is moved one step forward to obtain the corresponding letter of the code.
Q102
In  a certain code, Tripple is written as SQHOOKD, How is DISPOSE writtn in that code ?
  • A CHRONRD
  • B DSOESPI
  • C ESJTPTF
  • D ESOPSID
Answer: Option A
Explanation: Each letter in the word is moved one step hackward to obtain the corresponding letter of the code.
Q103
Find out the wrong term. 24, 27, 31, 33, 36
  • A 24
  • B 27
  • C 31
  • D 38
Answer: Option C
Q104
Find out the wrong term. 196, 169, 144, 121, 80
  • A 80
  • B 121
  • C 169
  • D 196
Answer: Option A
Q105
Find out the wrong term. 3, 5, 7, 9, 11, 13
  • A 3
  • B 5
  • C 7
  • D 9
Answer: Option D
Q106
Find out the wrong term. 121, 143, 165, 186, 209
  • A 143
  • B 165
  • C 186
  • D 209
Answer: Option C
Explanation: Each term of the series is increased by 22 to obtain the next term. So, 186 is wrong and must be replaced by (165 + 22) i.e. 187.
Q107
Find out the wrong term. 1, 2, 4, 8, 16, 32, 64, 96
  • A 4
  • B 32
  • C 64
  • D 96
Answer: Option D
Q108
Find out the wrong term. 8, 14, 26, 98, 194, 386
  • A 14
  • B 48
  • C 98
  • D 194
Answer: Option B
Explanation: Each term in the series is less than twice the preceding term by 2. So 48 is wrong and should be replaced by (26 * 2 - 2) i.e. 50 .
Q109
Find out the wrong term. 8,, 13, 21, 32, 47, 63, 83
  • A 8
  • B 13
  • C 21
  • D 32
Answer: Option D
Q110
Find out the wrong term. 3, 10, 27, 4, 16, 64, 5, 25, 125
  • A 3
  • B 4
  • C 10
  • D 27
Answer: Option C

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