Practice Question and Answer

Q: A person travels from K to L a speed of 50 km/hr and returns by increasing his speed by 50%. What is his average speed for both the trips ? 2018 0

  • 1
    55 kmph
    Correct
    Wrong
  • 2
    58 kmph
    Correct
    Wrong
  • 3
    60 kmph
    Correct
    Wrong
  • 4
    66 kmph
    Correct
    Wrong
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Answer : 3. "60 kmph"
Explanation :

Answer: C) 60 kmph Explanation: Speed on return trip = 150% of 50 = 75 km/hr. Average speed = (2 x 50 x 75)/(50 + 75) = 60 km/hr.

Q: What is the subnet for host ID 10.16.3.65/23? 2018 0

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Answer :
Explanation :

A/23 is 255.255.254.0. The third octet is a block size of 2.0, 2, 4. The subnet is in the 16.2.0 subnet; the broadcast address is 16.3.255

Q:

निम्न में कौन-से देश में मिश्रित अर्थव्यवस्था है ?

2018 0

  • 1
    अमेरिका
    Correct
    Wrong
  • 2
    भारत
    Correct
    Wrong
  • 3
    चीन
    Correct
    Wrong
  • 4
    रूस
    Correct
    Wrong
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Answer : 2. "भारत"

Q: The unit of current is 2018 0

  • 1
    ohm
    Correct
    Wrong
  • 2
    watt
    Correct
    Wrong
  • 3
    ampere
    Correct
    Wrong
  • 4
    None of above
    Correct
    Wrong
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Answer : 3. "ampere"

Q: A motorboat takes half time to cover a certain distance downstream than upstream. What is the ratio between rate of current and rate of boat in still water? 2018 0

  • 1
    1 : 3
    Correct
    Wrong
  • 2
    3 : 2
    Correct
    Wrong
  • 3
    2 : 3
    Correct
    Wrong
  • 4
    3 : 1
    Correct
    Wrong
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Answer : 1. "1 : 3"
Explanation :

Answer: A) 1 : 3 Explanation: Let the speed of the boat in still water is 'w' Speed of the current is 'c' Let the distance between two places is 'd' According to the question, motorboat takes half time to cover a certain distance downstream than upstream. dw+c = 12dw-c => 2w - 2c = w + c => w = 3c => c : w = 1 : 3   Hence, the ratio between rate of current(c) and rate of boat in still water(w) = 1 : 3

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Answer : 1. "85 किलो"
Explanation :

undefined

Q:

यदि “LEMON”  को “NCOM” के रूप में कूटबद्ध किया जाता है तो “MANGO” को कैसे लिखा जाएगा।

2017 0

  • 1
    NDRHP
    Correct
    Wrong
  • 2
    OZRDS
    Correct
    Wrong
  • 3
    RZPES
    Correct
    Wrong
  • 4
    OYPEQ
    Correct
    Wrong
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Answer : 4. "OYPEQ"

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