Books and Authors Practice Question and Answer

Q: Find the wrong number in the given number series? 10, 21, 54, 109, 189 8528 0

  • 1
    189
    Correct
    Wrong
  • 2
    109
    Correct
    Wrong
  • 3
    54
    Correct
    Wrong
  • 4
    21
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "189"
Explanation :

Answer: A) 189 Explanation: The given number series is 10, 21, 54, 109, 189 The series follows a pattern that 10 + 11 = 21 21 + 33 = 54 54 + 55 = 109 109 + 77 = 186   Hence the wrong number in the given number series is 189.

Q: 3125  256  ?  4  1 Which number replaces the "?" in the question? 2605 0

  • 1
    27
    Correct
    Wrong
  • 2
    128
    Correct
    Wrong
  • 3
    32
    Correct
    Wrong
  • 4
    64
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "27"
Explanation :

Answer: A) 27 Explanation: In the given series numbers are arranged following the rule, 55,44, 33, 22, 11  Therefore, the missing number is 27.

Q: Find the odd one out ? Hawk ,  Parrot ,  Owl ,  Eagle 4050 0

  • 1
    Eagle
    Correct
    Wrong
  • 2
    Owl
    Correct
    Wrong
  • 3
    Parrot
    Correct
    Wrong
  • 4
    Hawk
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "Parrot"
Explanation :

Answer: C) Parrot Explanation: All except Parrot are birds of prey.

Q: Find out the wrong term in the given series of numbers ?6, 15, 35, 77, 165, 221 1527 0

  • 1
    35
    Correct
    Wrong
  • 2
    165
    Correct
    Wrong
  • 3
    221
    Correct
    Wrong
  • 4
    77
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "165"
Explanation :

Answer: B) 165 Explanation: The given series follow the rule that : Multiplying consecutive prime numbers2,3,5,7,11,13,17,19....2x3 = 63x5 = 155x7 = 357x11 = 7711x13 = 14313x17 = 221So, the wrong term is 165.

Q: Find out the wrong number in the following series ? 2880, 480, 92, 24, 8, 4, 4 1486 0

  • 1
    480
    Correct
    Wrong
  • 2
    92
    Correct
    Wrong
  • 3
    24
    Correct
    Wrong
  • 4
    4
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "92"
Explanation :

Answer: B) 92 Explanation: The given series of numbers follow the rule that, 2880/6 = 480480/5   = 9696/4     = 2424/3     = 88/2       = 44/1       = 4 But 92 is not in the rule. It is the wrong number in the given series.

Q: A man saves Rs. 200 in each of the first three months of his service. In each of the subsequent months his saving increases by Rs. 40 more than the saving of immediately previous month. His total saving from the start of service will be Rs. 11040 after ? 1348 0

  • 1
    19 months
    Correct
    Wrong
  • 2
    21 months
    Correct
    Wrong
  • 3
    18 months
    Correct
    Wrong
  • 4
    20 months
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "21 months"
Explanation :

Answer: B) 21 months Explanation: Total savings = 200 + 200 + 200 + 240 + 280 + ... to n months = 11040 = 120 + 80 + 160 + 40 + 200 + 240 + ....n terms= 40 + 80 + 120 + 160 + 200 + 240 + ...n terms= n/2[2a + (n-1)d] + 80 + 40 = 11040= n/2[240 + (n-1)40] = 10920= n[6+n-1] = 546= n[n+5] = 546n = 21

Q: Find the next number in the given series ? 3, 7, 6, 5, 9, 3, 12, 1, 15, . . . 2028 0

  • 1
    2
    Correct
    Wrong
  • 2
    0
    Correct
    Wrong
  • 3
    1
    Correct
    Wrong
  • 4
    -1
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "-1"
Explanation :

Answer: D) -1 Explanation: 3, 7, 6, 5, 9, 3, 12, 1, 15, ... has two different series 1) 3, 6, 9, 12, 15..... 2) 7, 5, 3, 1, ..... -1 is the next number.

Q: Find the next number in te given series ? 5, 25, 61, 113, ... 5613 0

  • 1
    142
    Correct
    Wrong
  • 2
    181
    Correct
    Wrong
  • 3
    156
    Correct
    Wrong
  • 4
    179
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "181"
Explanation :

Answer: B) 181 Explanation: Here the series follow the rule that 12+22 = 5 32+42 = 2552+62 = 61 72+82 = 113   SO NEXT IS, 92+102 = 181

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully