GATE Practice Question and Answer

Q: A person lends Rs. 1540 for five years and Rs. 1800 for four years. If he gets Rs. 1788 as interest on both amounts, what is the rate of interest ? 1942 0

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    14.5%
    Correct
    Wrong
  • 2
    11%
    Correct
    Wrong
  • 3
    12%
    Correct
    Wrong
  • 4
    10.5%
    Correct
    Wrong
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Answer : 3. "12%"
Explanation :

Answer: C) 12% Explanation: Let the interest rate be r% We know that, S.I = PTR/100 => (1540 x 5 x r)/100  +  (1800 x 4 x r)/100 = 1788 => r = 178800/14900 = 12%

Q: What steps do you follow to study a problem before making a decision ? 1942 0

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Answer :
Explanation :

The interviewer wants to know that you don't just jump into a solution without knowing the problem in detail. You want to study the problem by determining the cause of the problem, what the problem is, and what the possible solutions are. You then decide on a solution.Following steps for problem-solving and decision-making can be very helpful.- Define the problem to be solved and decision to be made.- Gather the necessary information. - List all possible choices. - Consider possible outcomes for each choice. - Check out how you feel about each of the choices. - Relate the choices to your values and priorities. - From the possible alternatives, choose one. - Commit yourself to your chosen decision and disregard the others. Concentrate your energies   in one direction. Once we made our decision, we must focus all our work on that itself.- Take steps to turn your decision into positive action. - Evaluate your progress from time to time. Change your decision if necessary.

Q: A can complete 9/10 part of a work in 31 days. After that, with the help of B he can complete the remaining work in 4 days. In how many days will  A and B together can complete that work ? 1936 0

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    36
    Correct
    Wrong
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    40
    Correct
    Wrong
  • 3
    42
    Correct
    Wrong
  • 4
    38
    Correct
    Wrong
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Answer : 2. "40"
Explanation :

Answer: B) 40 Explanation: Remaining work = 1 - 9/10 = 1/10   => A & B together completes 1/10 of work in 4 days   => 1 work can completed in ------ ? days   Let it be x days   =>  4110=x1   => x = 40 days.   Hence, A & B together can complete the work in 40 days.

Q: There are two numbers such that the sum of twice the first number and thrice the second number is 100 and sum of thrice the first number and twice the second number is 120. Which is the larger number ? 1935 0

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    32
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    26
    Correct
    Wrong
  • 4
    38
    Correct
    Wrong
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Answer : 1. "32"
Explanation :

Answer: A) 32 Explanation: Let the first number be K and second number be LThen, 2K + 3L = 100.....(1)3K + 2L = 120.......(2)solving (1)&(2), we getK = 32 and L = 12 Hence the largest number is 32.

Q: A train-A passes a stationary train B and a pole in 24 sec and 9 sec respectively. If the speed of train A is 48 kmph, what is the length of train B? 1935 0

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    200 mts
    Correct
    Wrong
  • 2
    180 mts
    Correct
    Wrong
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    160 mts
    Correct
    Wrong
  • 4
    145 mts
    Correct
    Wrong
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Answer : 1. "200 mts"
Explanation :

Answer: A) 200 mts Explanation: Length of train A = 48 x 9 x 5/18 = 120 mts Length of train B = 48 x 24 x 5/18 - 120 => 320 - 120 = 200 mts.

Q: Which statement best describes an igneous intrusion? 1933 0

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    Igneous intrusion for when ice crystals splash into lava
    Correct
    Wrong
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    Magma is injected into surrounding rock forming an igneous intrusive
    Correct
    Wrong
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    Magma is exported to an open area and forms iron
    Correct
    Wrong
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    Magma explodes to the surface and forms a smooth outer layer of rock
    Correct
    Wrong
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Answer : 2. "Magma is injected into surrounding rock forming an igneous intrusive"
Explanation :

Answer: B) Magma is injected into surrounding rock forming an igneous intrusive Explanation: Magma is injected into surrounding rock forming an igneous intrusive.   Actually it is a plutonic formation in which magma present beneath Earth surface deforms the shape of rocks present above it

Q: what is the source of energy for the water cycle? 1932 0

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    Rain water
    Correct
    Wrong
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    Sun
    Correct
    Wrong
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    Clouds
    Correct
    Wrong
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    Animals
    Correct
    Wrong
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Answer : 2. "Sun"
Explanation :

Answer: B) Sun Explanation: The water cycle is a term for the movement of water between the Earth's surface, the sky and underground. Water evaporates due to heat from the sun. Hence, the water cycle is driven primarily by the energy from the sun. This solar energy drives the cycle by evaporating water from the oceans, lakes, rivers, and even the soil. Other water moves from plants to the atmosphere through the process of transpiration.

Q: A is the father of B. But B is not the son of A. Then what is B to A? 1932 0

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    Grandfather
    Correct
    Wrong
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    Son-in-law
    Correct
    Wrong
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    Granddaughter
    Correct
    Wrong
  • 4
    Daughter
    Correct
    Wrong
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Answer : 4. "Daughter"
Explanation :

Answer: D) Daughter Explanation: The relation is father and daughter. As we go with male gender, will be son of A. But it is given in the question that B is not the son of A. Hence, te only possile is B is female and B is daughter of A.

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