Books and Authors Practice Question and Answer

Q: दी गई संख्या श्रंखला में गलत संख्या ज्ञात कीजिए? 10, 21, 54, 109, 189 8287 0

  • 1
    189
    Correct
    Wrong
  • 2
    109
    Correct
    Wrong
  • 3
    54
    Correct
    Wrong
  • 4
    21
    Correct
    Wrong
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Answer : 1. "189"
Explanation :

Answer: A) 189 स्पष्टीकरण: दी गई संख्या श्रृंखला 10, 21, 54, 109, 189 है श्रृंखला एक पैटर्न का अनुसरण करती है कि 10 + 11 = 21 21 + 33 = 54 54 + 55 = 109 109 + 77 = 186 इसलिए दिए गए में गलत संख्या संख्या श्रृंखला 189 है।

Q: 3125  256  ?  4  1 Which number replaces the "?" in the question? 2487 0

  • 1
    27
    Correct
    Wrong
  • 2
    128
    Correct
    Wrong
  • 3
    32
    Correct
    Wrong
  • 4
    64
    Correct
    Wrong
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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 3947 0

  • 1
    Eagle
    Correct
    Wrong
  • 2
    Owl
    Correct
    Wrong
  • 3
    Parrot
    Correct
    Wrong
  • 4
    Hawk
    Correct
    Wrong
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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 1425 0

  • 1
    35
    Correct
    Wrong
  • 2
    165
    Correct
    Wrong
  • 3
    221
    Correct
    Wrong
  • 4
    77
    Correct
    Wrong
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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 1357 0

  • 1
    480
    Correct
    Wrong
  • 2
    92
    Correct
    Wrong
  • 3
    24
    Correct
    Wrong
  • 4
    4
    Correct
    Wrong
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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 ? 1264 0

  • 1
    19 months
    Correct
    Wrong
  • 2
    21 months
    Correct
    Wrong
  • 3
    18 months
    Correct
    Wrong
  • 4
    20 months
    Correct
    Wrong
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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, . . . 1942 0

  • 1
    2
    Correct
    Wrong
  • 2
    0
    Correct
    Wrong
  • 3
    1
    Correct
    Wrong
  • 4
    -1
    Correct
    Wrong
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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, ... 5487 0

  • 1
    142
    Correct
    Wrong
  • 2
    181
    Correct
    Wrong
  • 3
    156
    Correct
    Wrong
  • 4
    179
    Correct
    Wrong
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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

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