GATE Practice Question and Answer

Q: Crack the series missing Number Puzzle ? 1818 0

  • 1
    330
    Correct
    Wrong
  • 2
    253
    Correct
    Wrong
  • 3
    221
    Correct
    Wrong
  • 4
    363
    Correct
    Wrong
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Answer : 4. "363"
Explanation :

Answer: D) 363 Explanation: The given numbers in the series follows a pattern that, 3 (3 x 3) + 3 = 12 (12 x 3) + 3 = 39 (39 x 3) + 3 = 120 (120 x 3) + 3 = 363.

Q: How many inches is 5' 4"? 1818 0

  • 1
    66
    Correct
    Wrong
  • 2
    64
    Correct
    Wrong
  • 3
    62
    Correct
    Wrong
  • 4
    60
    Correct
    Wrong
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Answer : 2. "64"
Explanation :

Answer: B) 64 Explanation: We know 1 feet = 12 inches. According to the question, 5' 4''  =  5 feet 4 inches = 12 x 5 + 4 = 64 inches.   Hence,  5' 4''  =  5 feet 4 inches = 64 inches.

Q: Albert invested Rs. 8000 in a scheme for 2 years at compound interest rate 5% p.a. How much amount will Albert get on maturity of the fixed deposit  ? 1818 0

  • 1
    Rs. 8840
    Correct
    Wrong
  • 2
    Rs. 8800
    Correct
    Wrong
  • 3
    Rs. 8810
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 4. "None"
Explanation :

Answer: D) None Explanation: Amount = 80001+51002   = 8000 x 21/20 x 21/20    = Rs. 8820

Q: Sneha’s weight is 140% of Veena’s weight. Rina’s weight is 90% of Sana’s weight. Sana weighs twice as much as Veena. If Sneha’s weight is x% of Rina’s weight, then x is equal to: 1817 0

  • 1
    596/9
    Correct
    Wrong
  • 2
    605/9
    Correct
    Wrong
  • 3
    645/9
    Correct
    Wrong
  • 4
    700/9
    Correct
    Wrong
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Answer : 4. "700/9"
Explanation :

Answer: D) 700/9 Explanation: Let Veena's weight = 1 kg Sana's weight = 2 kg Sneha's weight = 1.4 kg Rina's weight = 1.8 kg Now,according to the given data in the question, 1.8x100 = 1.4   x = 1.4 × 1001.8 = 7009 = 77 79.

Q: A number is increased by 20% and then decreased by 20%, the final value of the number is ? 1817 0

  • 1
    increase by 2%
    Correct
    Wrong
  • 2
    decrease by 3%
    Correct
    Wrong
  • 3
    decrease by 4%
    Correct
    Wrong
  • 4
    increase by 5%
    Correct
    Wrong
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Answer : 3. "decrease by 4%"
Explanation :

Answer: C) decrease by 4% Explanation: Here, x = 20 and y = - 20Therefore, the net % change in value=x + y + xy100 %= 20 + -20 + 20 × -20100%  or  - 4% Since the sign is negative, there is a decrease in value by 4%.

Q: What will come in place of the question mark (?) in the following number series  ? 12, 24, 26.5, 79.5, ?, 330 1815 0

  • 1
    211
    Correct
    Wrong
  • 2
    101.5
    Correct
    Wrong
  • 3
    82.5
    Correct
    Wrong
  • 4
    99
    Correct
    Wrong
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Answer : 3. "82.5"
Explanation :

Answer: C) 82.5 Explanation: The given series    12   24   26.5   79.5   ?   330 follows a pattern that,   12 x 2 = 24   24 + 2.5 = 26.5   26.5 x 3 = 79.5   79.5 + 3 = 82.5   82.5 x 4 = 330   Hence, the missing number is 82.5

Q: ANBC full form is? 1814 0

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Answer :
Explanation :

ANBC Full Form is Adjusted Net Bank Credit. ANBC refers to Adjusted Net Bank Credit, is Net Bank Credit added to investments made by banks in non-SLR bonds (in held-to-maturity) or it is the credit equivalent of off-balance - sheet exposures, whichever is higher.   Net Bank Credit = Outstanding bank credits in India (-) Bills rediscounted with RBI/approved financial institutions.

Q: A bag contains 4 red and 3 black balls. A second bag contains 2 red and 4 black balls. One bag is selected at random. From the selected bag, one ball is drawn. Find the probability that the ball drawn is red. 1813 0

  • 1
    23/42
    Correct
    Wrong
  • 2
    19/42
    Correct
    Wrong
  • 3
    7/32
    Correct
    Wrong
  • 4
    16/39
    Correct
    Wrong
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Answer : 2. "19/42"
Explanation :

Answer: B) 19/42 Explanation: A red ball can be drawn in two mutually exclusive ways  (i) Selecting bag I and then drawing a red ball from it.   (ii) Selecting bag II and then drawing a red ball from it.   Let E1, E2 and A denote the events defined as follows: E1 = selecting bag I, E2 = selecting bag II A = drawing a red ball Since one of the two bags is selected randomly, therefore  P(E1) = 1/2  and  P(E2) = 1/2 Now, PAE1 = Probability of drawing a red ball when the first bag has been selected = 4/7   PAE2  = Probability of drawing a red ball when the second bag has been selected = 2/6  Using the law of total probability, we have   P(red ball) = P(A) = PE1×PAE1+PE2×PAE2                              = 12×47+12×26=1942

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