GATE Practice Question and Answer
8Q: 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 8308 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.
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 ? 8300 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: M and N have children A and B.F is spouse of B.D is child of F.P is son in law of N.K is kid of P. Who is male chiled of M and N ? 8299 05b5cc741e4d2b4197774f990
5b5cc741e4d2b4197774f990- 1Btrue
- 2Afalse
- 3Nonefalse
- 4Can't be determinedfalse
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Answer : 1. "B"
Explanation :
Answer: A) B Explanation: Spouse means a person's partner in marriage, it can be male or female.But given F is spouse of BAnd P is Son in law of NRelation between F and BRelation between P and A onlyand p is male So, A must be female=> B is male child.
Q: 6, 3, 3, 6, 24, ? Find the next number in the given number series? 8271 05b5cc6bbe4d2b4197774d807
5b5cc6bbe4d2b4197774d807- 1192true
- 2186false
- 3182false
- 4194false
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Answer : 1. "192"
Explanation :
Answer: A) 192 Explanation: Given 6 3 3 6 24 ? Here 6 6 x 0.5 = 3 3 x 1 = 3 3 x 2 = 6 6 x 4 = 24 24 x 8 = 192 The next number in the given series is 192.
Q: what is the missing number in the sequence given below? 12 9 13.50 30.37 ? 341.71 8202 05b5cc6b2e4d2b4197774d3a9
5b5cc6b2e4d2b4197774d3a9- 187.63false
- 291.12true
- 393.41false
- 497.94false
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Answer : 2. "91.12"
Explanation :
Answer: B) 91.12 Explanation: Given number series is 12 9 13.5 30.3 ? 341.7 Here the pattern followed by the series is 12 12 x 0.75 = 9 9 x 1.5 = 13.5 13.5 x 2.25 = 30.3 30.37 x 3 = 91.12 91.12 x 3.75 = 341.71 Hence, the missing number in the sequence is 91.12.
Q: Three of the following four are alike in certain way and hence form a group. Which one of the following does not belong to that group ? 7958 05b5cc6f4e4d2b4197774efeb
5b5cc6f4e4d2b4197774efeb- 1BHFfalse
- 2LDJfalse
- 3OKGtrue
- 4ZTYfalse
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Answer : 3. "OKG"
Explanation :
Answer: C) OKG Explanation: OKGRemaining all are not in series only OKG is in series of(15,11,7) Here it follows the random difference of '4'.
Q: What is the Study of human beauty called? 7931 05b5cc6b4e4d2b4197774d4f2
5b5cc6b4e4d2b4197774d4f2- 1Argologyfalse
- 2Kalologytrue
- 3Agrostologyfalse
- 4Oncologyfalse
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Answer : 2. "Kalology"
Explanation :
Answer: B) Kalology Explanation: The Study of human beauty and the ways in which beauty influences the society is called as Kalology. This study is focused primarily on human attractiveness, rather than the broader field of aesthetics. Opposite of beauty is Ugly.
Q: A cuboid shaped wooden block has 6 cm length, 4 cm breadth and 1 cm height.Two faces measuring 4 cm x 1 cm are coloured in black.Two faces measuring 6 cm x 1 cm are coloured in red.Two faces measuring 6 cm x 4 cm are coloured in green.The block is divided into 6 equal cubes of side 1 cm (from 6 cm side), 4 equal cubes of side 1 cm(from 4 cm side). How many cubes will have green colour on two sides and rest of the four sides having no colour ? 7886 05b5cc761e4d2b4197774fd34
5b5cc761e4d2b4197774fd34- 18true
- 224false
- 316false
- 44false
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Answer : 1. "8"
Explanation :
Answer: A) 8 Explanation: There are 16 small cubes attached to the outer walls of the cuboid.Therefore remaining inner small cubes will be the cubes having two sides green coloured.So the required number = 24 - 16 = 8