GRE Practice Question and Answer
8Q: The ratio of speeds of a car, a train and a bus is 5:9:4. The average speed of the car, the bus and the train is 72 km/hr together. What is the average speed of the car and the train together ? 1757 05b5cc736e4d2b4197774f83c
5b5cc736e4d2b4197774f83c- 184 km/hrtrue
- 296 km/hrfalse
- 372 km/hrfalse
- 460 km/hrfalse
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Answer : 1. "84 km/hr"
Explanation :
Answer: A) 84 km/hr Explanation: Let the speeds of the car, train and bus be 5x, 9x and 4x km/hr respectively.Average speed = 5x + 9x + 4x/3 = 18x /3 = 6x km/hr.Also, 6x = 72 => x = 12 km/hrTherefore, the average speed of the car and train together is = 5x+9x2= 7x = 7 x 12 = 84 km/hr.
Q: If a man buys 1 lt of milk for Rs.12 and mixes it with 20% water and sells it for Rs.15, then what is the percentage of gain ? 1755 05b5cc74fe4d2b4197774fb12
5b5cc74fe4d2b4197774fb12- 125%true
- 230%false
- 317%false
- 419%false
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Answer : 1. "25%"
Explanation :
Answer: A) 25% Explanation: He has gain = 15 - 12 = 3,Gain% = (3/12) x 100 = (100/4) = 25.He has 25% gain.
Q: I am an 8 letter word. First 4 is the question. 2, 3, 4 protects our head. 5, 6, 7 IT company name. 7 & 8 are the same letters. Who am I? 1755 05b5cc6a7e4d2b4197774cdee
5b5cc6a7e4d2b4197774cdee- Show Answer
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Answer :
Explanation :
That 8 letter word is Whatsapp (a messenger app) First four letters: WHAT a question Letters 2,3,4: HAT protects our headLetters 5,6,7: SAP an IT companyLetters 7,8: PP same.
Q: Galileo was an Italian Astronomer who 1748 05b5cc6b8e4d2b4197774d670
5b5cc6b8e4d2b4197774d670- 1Discovered 4 satellites of Marsfalse
- 2Developed the Telescopefalse
- 3Discovered that the movement of pendulum produces a regular time measurementfalse
- 4Both B & Ctrue
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Answer : 4. "Both B & C"
Explanation :
Answer: D) Both B & C Explanation: Galileo Galilei (1564-1642) was an Italian Astronomer who 1) Discovered 4 satellites of Jupiter 2) Developed Telescope 3) Discovered that the movement of pendulum produces a regular time measurement He is Physicist, Mathematician, inventor, and philosopher Too.
Q: What kind of Room has No Doors or Windows 1746 05b5cc6abe4d2b4197774d00b
5b5cc6abe4d2b4197774d00b- Show Answer
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Answer :
Explanation :
Mushroom.
Q: Which word in the dictionary is spelled incorrectly? 1744 05b5cc63de4d2b4197774bb19
5b5cc63de4d2b4197774bb19- Show Answer
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Answer :
Explanation :
Incorrectly is the only word which is spelled incorrectly in the dictionary.
Q: A, B and C can do a piece of work in 72, 48 and 36 days respectively. For first p/2 days, A & B work together and for next ((p+6))/3days all three worked together. Remaining 125/3% of work is completed by D in 10 days. If C & D worked together for p day then, what portion of work will be remained? 1743 05b5cc669e4d2b4197774bf4d
5b5cc669e4d2b4197774bf4d- 11/5false
- 21/6true
- 31/7false
- 41/8false
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Answer : 2. "1/6"
Explanation :
Answer: B) 1/6 Explanation: Total work is given by L.C.M of 72, 48, 36 Total work = 144 units Efficieny of A = 144/72 = 2 units/day Efficieny of B = 144/48 = 3 units/day Efficieny of C = 144/36 = 4 units/day According to the given data, 2 x p/2 + 3 x p/2 + 2 x (p+6)/3 + 3 x (p+6)/3 + 4 x (p+6)/3 = 144 x (100 - 125/3) x 1/100 3p + 4.5p + 2p + 3p + 4p = 84 x 3 - 54 p = 198/16.5 p = 12 days. Now, efficency of D = (144 x 125/3 x 1/100)/10 = 6 unit/day (C+D) in p days = (4 + 6) x 12 = 120 unit Remained part of work = (144-120)/144 = 1/6.
Q: Choose the missing terms in the given series from the four alternatives given below. C, E, G, J, M, Q, ? 1743 05b5cc76ae4d2b4197774fe70
5b5cc76ae4d2b4197774fe70- 1Tfalse
- 2Utrue
- 3Pfalse
- 4Vfalse
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Answer : 2. "U"
Explanation :
Answer: B) U Explanation: The letters move 2, 2, 3, 3, 4, 4, ... steps forward.