Find Out the Wrong Series :

Directions (Q. no. 1-5)
Find out the wrong series

  1. 140, 121, 100, 81, 64
    (a) 140,                       (b) 121                     (c) 100                        (d) 81
  2. 12, 16, 25, 41, 66, 104
    (a) 16                          (b) 66                       (c) 104                        (d) 12
  3. 256, 245, 223, 190, 146, 90
    (a) 90                         (b) 146                      (c) 190                        (d) 223
  4. Z5, X10, V29, T36, R69
    (a) V29                      (b) T36                      (c) R69                       (d) Z5
  5. UA, OC, IE, EJ, AO
    (a) UA                       (b) OC                        (c) IE                          (d) EJ
Anurag Mishra Professor Asked on 27th November 2015 in Reasoning Questions.
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  • 1 Answer(s)
    1. Answer: (a) 140

      Explanation:-
      140 is not a square of any number but rest numbers are the square.

      Hence, the answer is (a) 140.

    2. Answer: (c) 104

      Explanation:-
      12 + (2)2 = 12 + 4= 16,
      16 + (3)2 = 16 + 9
      = 25,
      25 + (4)2 = 25 + 16
      = 41,
      41 + (5)2 = 41 + 25
      = 66,
      Same,
      66 + (6)2 = 66 + 36
       = 102

      Hence, the answer is (c) 104.

    3. Answer: (a) 90

      Explanation:-
      256 – 1 x 11 = 256 – 11
      = 245,
      245 – 2 x 11 = 245 – 22
      = 223,
      223 – 3 x 11 = 223 – 33
      = 190,
      190 –  4 x 11 = 190 – 44
      = 146,
      146 – 5 x 11 = 146 – 55
      = 91.

      Then, the wrong term is 90.

      Hence, the answer is (a) 90.

    4. Answer:

      Explanation:-

    5. Answer: (d) EJ

      Explanation:-
      A + 2 = C,  C + 2 = E,  E + 2 = G
      But J is given in the series instead of J.

      Hence, the answer is (d) E J.

    Anurag Mishra Professor Answered on 29th November 2015.
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