GATE Practice Question and Answer
8Q: A thief goes away with a MARUTHI car at a speed of 40 kmph. The theft has been discovered after half an hour and the owner sets off in a bike at 50 kmph when will the owner over take the thief from the start ? 8104 05b5cc6e7e4d2b4197774ed97
5b5cc6e7e4d2b4197774ed97- 12 hrs 10 minfalse
- 22 hrstrue
- 32 hrs 5 minfalse
- 42 hrs 30 minfalse
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Answer : 2. "2 hrs"
Explanation :
Answer: B) 2 hrs Explanation: |-----------20--------------------|50 40 Difference = 20kms Relative Speed = 50 – 40 = 10 kmph Time = 20/10 = 2 hours.
Q: How many days are there in k weeks k days ? 7876 05b5cc75ce4d2b4197774fc2a
5b5cc75ce4d2b4197774fc2a- 18+k daysfalse
- 27+1k daysfalse
- 38k daystrue
- 47/k daysfalse
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Answer : 3. "8k days"
Explanation :
Answer: C) 8k days Explanation: As we know that a week has 7 days, k weeks k days = (7k + k) days = 8k days.
Q: Find the odd number in the following number series? 24, 4, 13, 41, 151, 640 7863 05b5cc6c1e4d2b4197774db73
5b5cc6c1e4d2b4197774db73- 14false
- 2640false
- 341true
- 413false
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Answer : 3. "41"
Explanation :
Answer: C) 41 Explanation: The given number series follows the pattern that, 24×0 + 4 = 4 4×1 + 9 = 13 13×2 + 16 = 42 42×3 + 25 = 151 151×4 + 36 = 640 Therefore, the odd number in the given series is 41
Q: Which city is known as 'Gold capital of the world' ? 7836 15b5cc6cfe4d2b4197774e2e9
5b5cc6cfe4d2b4197774e2e9- 1Johannesburgtrue
- 2Parisfalse
- 3Dubaifalse
- 4Saudifalse
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Answer : 1. "Johannesburg"
Explanation :
Answer: A) Johannesburg Explanation:
Q: What do you understand by - 'If K is there L has to be there' 7770 05b5cc6b1e4d2b4197774d32d
5b5cc6b1e4d2b4197774d32d- 1K & L will always be togetherfalse
- 2K is not there, then L will not be therefalse
- 3k is there, then L will also be theretrue
- 4K & L will always be not togetherfalse
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Answer : 3. "k is there, then L will also be there"
Explanation :
Answer: C) k is there, then L will also be there Explanation: This would not mean that K and L will always be together. It just implies that, if K is there, then L will also be there. At the same time, it can happen that L is there but K isn't. Remember, the condition is on K, not on L.
Q: In a competitive exam, the number of passed students was four times the number of failed students. If there had been 35 fewer appeared students and 9 more had failed, the ratio of passed and failed students would have been 2 : 1, then the total number of students appered for the exam ? 7769 05b5cc6c2e4d2b4197774dbbe
5b5cc6c2e4d2b4197774dbbe- 1175false
- 2165false
- 3155true
- 4145false
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Answer : 3. "155"
Explanation :
Answer: C) 155 Explanation: Let the number of failed students be x => Number of passed students = 4x So total number of students was 5x From the given data, If total number of students be 5x – 35 => 4x-35-9/x+9 = 2/1 => 4x – 44 = 2(x + 9) => 4x – 2x = 18 + 44 => x = 31 Total number = 31×5 = 155
Q: In latest generation computers, the instructions are executed 7701 05b5cc645e4d2b4197774bbdb
5b5cc645e4d2b4197774bbdb- 1Sequentially onlyfalse
- 2Both sequentially and parallellytrue
- 3Parallelly onlyfalse
- 4None of the abovefalse
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Answer : 2. "Both sequentially and parallelly"
Explanation :
Answer: B) Both sequentially and parallelly Explanation:
Q: Four thermal heaters A,B, C and D are used in the R & D department of Raliance chemicals Ltd. Only one heater can be used on any day . If heater A is used on any day, neither A nor C can be used the next day. If heater C is used on any day, neither C nor D can be used on the next day. If heater C is used on any day, then A has to be used the next day. If heater D is used on any day, then B has to be used the next day. If heater D is used on the third day and different heaters are used on first and fourth day, which heater is used on the first day ? (1) D (2) A (3) B (4) C 7659 05b5cc758e4d2b4197774fbcf
5b5cc758e4d2b4197774fbcf- Show AnswerHide Answer
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Answer :
Explanation :
If heater D is used on the third day, heater B has to be used on the fourth day and A has to be used on the second day. But if A is used on second day, then either B or C has to be used on the first day. But if heater B is used on the first day, then according to the question, the requirement of having different heaters on the first day and fourth days would not be fulfilled. Hence the heater that would be used on the first day is C.