GATE Practice Question and Answer

Q: Can you Solve 7 + 7 ÷ 7 + 7 x 7 + 7 - 7 ÷ 7 + 7 x 7 = 2012 0

  • 1
    112
    Correct
    Wrong
  • 2
    56
    Correct
    Wrong
  • 3
    0
    Correct
    Wrong
  • 4
    98
    Correct
    Wrong
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Answer : 1. "112"
Explanation :

Answer: A) 112 Explanation: 7  + 7 ÷ 7 + 7 x 7 + 7 - 7 ÷ 7 + 7 x 7= 7 + 1 + 49 + 7 - 1 + 49= 8 + 56 + 48= 56 + 56= 112

Q: The angle between the minute hand and the hour hand of a clock when the time is 4.15 is 2010 0

  • 1
    0
    Correct
    Wrong
  • 2
    37.5
    Correct
    Wrong
  • 3
    27
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 2. "37.5"
Explanation :

Answer: B) 37.5 Explanation: Angle between hands of a clock   When the minute hand is behind the hour hand, the angle between the two hands at M minutes past H 'o clock   => 30H-M5+M2 degrees   Here H = 4, M = 15 and the minute hand is behind the hour hand.   Hence the angle    = 30[4-(15/5)]+15/2 = 30(1)+7.5 = 37.5 degrees

Q: What goes in dry and comes out wet? 2010 0

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Answer :
Explanation :

A Bath towel or a tea bag are suitable answers.

Q: A & B invest Rs. 1,16,000 & 1,44,000 respectively. B invests for 6 months. At the end of the year, B’s share is Rs. 9000, find the overall profit? 2010 0

  • 1
    Rs. 23,500
    Correct
    Wrong
  • 2
    Rs. 19,780
    Correct
    Wrong
  • 3
    Rs. 21,700
    Correct
    Wrong
  • 4
    Rs. 20,050
    Correct
    Wrong
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Answer : 1. "Rs. 23,500"
Explanation :

Answer: A) Rs. 23,500 Explanation: Given A & B in partnership A Invests 116000 for 12 months  => A's share = 116000 x 12 = 13,92,000 B Invests for 6 months => B's share = 144000 x 6 = 8,64,000 Their Ratio = 1392 : 864 = 29 : 18 Let the Annual profit = P Given B's share = Rs. 9000 => 18/47 x P = 9000 => P = 9000 x 47/18 => P = 23,500 Hence, Overall profit = P = Rs. 23,500

Q: In a vacuum, all electromagnetic waves have the same 2009 0

  • 1
    Velocity
    Correct
    Wrong
  • 2
    Wavelenth
    Correct
    Wrong
  • 3
    Frequency
    Correct
    Wrong
  • 4
    All the above
    Correct
    Wrong
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Answer : 1. "Velocity"
Explanation :

Answer: A) Velocity Explanation: When traveling in a vacuum, electronic waves from the electromagnetic spectrum all travel at the same speed. Velocity is speed with direction, so they would all travel at the same velocity, realtively speaking. But frequency and wavelength are quite different.

Q: What should be replaced in the place of '?' in the following series ? JAK, KBL, LCM, MDN, ? 2009 0

  • 1
    MEN
    Correct
    Wrong
  • 2
    NEM
    Correct
    Wrong
  • 3
    NEO
    Correct
    Wrong
  • 4
    OEP
    Correct
    Wrong
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Answer : 3. "NEO"
Explanation :

Answer: C) NEO Explanation: This is an alternating series in alphabetical order. The middle letters follow the order ABCDE. The first and third letters are alphabetical beginning with J. The third letter is repeated as a first letter in each subsequent three-letter segment.

Q: What frequency range is the high frequency band? 2009 0

  • 1
    3 kHz
    Correct
    Wrong
  • 2
    3 to 30 MHz
    Correct
    Wrong
  • 3
    30 to 300 MHz
    Correct
    Wrong
  • 4
    10 GHz
    Correct
    Wrong
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Answer : 2. "3 to 30 MHz"
Explanation :

Answer: B) 3 to 30 MHz Explanation: The HF band is based on frequencies 3 to 30 Mhz. AM radio stations are in the HF band but normally are stated in kilohertz.

Q: 5x - 6 = 3x - 8 Solve the above equation. 2008 0

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

Answer: B) -1 Explanation: Given 5x - 6 = 3x - 8 5x - 3x = -8 + 6 2x = -2 => x = -1.

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