GATE Practice Question and Answer
8Q: Rajan's present age is three times his daughter's and nine-thirteenth of his mother's present age. The sum of the present ages of all three of them is 125 years. What is the difference between the present ages of Rajan's daughter and Rajan's mather ? 2734 05b5cc72ce4d2b4197774f773
5b5cc72ce4d2b4197774f773- 132 yearsfalse
- 248 yearsfalse
- 362 yearsfalse
- 450 yearstrue
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Answer : 4. "50 years"
Explanation :
Answer: D) 50 years Explanation: Let Rajan's present age be 'x' years.=> Then his daughter's present age is = x/3 years.His mother's present age = 13x/9 yearsNow, according to the question,x + x/3 + 13x/9 = 125=> x = 125x9/25 = 45Therefore, required difference = 13x/9 - x/3 = 13x - 3x/9 = 10x/9=> 10 x 45/9 = 50 years.
Q: The resolution of a printer is measured in 2733 05b5cc626e4d2b4197774b869
5b5cc626e4d2b4197774b869- 1DPItrue
- 2Megabitsfalse
- 3Hertzfalse
- 4Inchesfalse
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Answer : 1. "DPI"
Explanation :
Answer: A) DPI Explanation: Dots per inch (DPI, or dpi) is a measure of spatial printing or video or image scanner dot density, in particular the number of individual dots that can be placed in a line within the span of 1 inch (2.54 cm).
Q: In each question given below four conclusions are followed by statements. You have to take the three given statements to be true (even if they seem to be at variance from the commonly known facts). Read the conclusions and decide which of the following set of statement indicate that conclusion is logically follows. Statements : 1. All chairs are tents. 2. No chairs is jugs. 3. No jugs is glasses. 4. No glasses is pots. Conclusions : I. All pots are tents. II. All glasses are chair. III. Some jugs are tents. 2730 05b5cc6b7e4d2b4197774d61f
5b5cc6b7e4d2b4197774d61f- 1Only conclusion I followsfalse
- 2Both conclusion II & III followsfalse
- 3None followstrue
- 4Only conclusion II followsfalse
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Answer : 3. "None follows"
Explanation :
Answer: C) None follows Explanation:
Q: Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? ___ utt ___ tt ___ ttu ___ 2727 05b5cc6f1e4d2b4197774ef59
5b5cc6f1e4d2b4197774ef59- 1t t u tfalse
- 2t u t tfalse
- 3t u u ttrue
- 4t t t ufalse
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Answer : 3. "t u u t"
Explanation :
Answer: C) t u u t Explanation: t, u, u and t. The sequence is : tut tut tut tut.
Q: What rights does the Declaration of Independence express? 2727 05b5cc672e4d2b4197774c096
5b5cc672e4d2b4197774c096- 1The right to remain silent when interrogated by policefalse
- 2The right to citizenshipfalse
- 3Legal rights of citizenstrue
- 4Human rights of citizens, including life and libertyfalse
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Answer : 3. "Legal rights of citizens"
Explanation :
Answer: C) Legal rights of citizens Explanation: The Declaration of Independence express Legal rights of citizens.
Q: A man covers a distance of 1200 km in 70 days resting 9 hours a day, if he rests 10 hours a day and walks with speed 1½ times of the previous in how many days will he cover 840 km ? 2727 05b5cc745e4d2b4197774fa0e
5b5cc745e4d2b4197774fa0e- 139 daysfalse
- 237 daysfalse
- 335 daystrue
- 433 daysfalse
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Answer : 3. "35 days"
Explanation :
Answer: C) 35 days Explanation: Distance d = 1200kmlet S be the speed he walks 15 hours a day(i.e 24 - 9)so totally he walks for 70 x 15 = 1050hrs. S = 1200/1050 => 120/105 = 24/21 => 8/7kmph given 1 1/2 of previous speedso 3/2 * 8/7= 24/14 = 12/7 New speed = 12/7kmph Now he rests 10 hrs a day that means he walks 14 hrs a day. time = 840 x 7 /12 => 490 hrs=> 490/14 = 35 days So he will take 35 days to cover 840 km.
Q: Dry ice is nothing but 2724 05b5cc60de4d2b4197774b62c
5b5cc60de4d2b4197774b62c- 1Solid carbon dioxidetrue
- 2Baking sodafalse
- 3Gaseous carbon dioxidefalse
- 4Carbon monoxidefalse
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Answer : 1. "Solid carbon dioxide"
Explanation :
Answer: A) Solid carbon dioxide Explanation: Dry ice is solid form of carbon dioxide, used as a cooling agent. It lower temperature than that of water ice and not leave any residue.
Q: What is the ratio of 18 minutes to one hour ? 2720 05b5cc6bfe4d2b4197774da24
5b5cc6bfe4d2b4197774da24- 11/5false
- 23/4false
- 31/7false
- 43/10true
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Answer : 4. "3/10"
Explanation :
Answer: D) 3/10 Explanation: One hour = 60 min 18/60 = 3/10