GRE प्रश्न और उत्तर का अभ्यास करें
8प्र: In oceania, most towns began as 1829 05b5cc60ae4d2b4197774b582
5b5cc60ae4d2b4197774b582- 1Colonial portstrue
- 2plantationsfalse
- 3tribal ritual centersfalse
- 4capital citiesfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 1. "Colonial ports"
व्याख्या :
Answer: A) Colonial ports Explanation: Oceania is a geographic region comprising Melanesia, Micronesia, Polynesia and Australasia. In Oceani, most towns began as Colonial Ports.
प्र: Which startup acquired Google's satellite imaging business in 2017 ? 1826 05b5cc75ce4d2b4197774fc75
5b5cc75ce4d2b4197774fc75- 1NovaWurksfalse
- 2PlanetiQfalse
- 3Planet Labstrue
- 4UrtheCastfalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 3. "Planet Labs"
व्याख्या :
Answer: C) Planet Labs Explanation: American startup Planet Labs, that launches small satellites into orbit and sells the imagery, has announced its acquisition of Google's 'Terra Bella' satellite business. As part of the agreement, 60 Google employees will join the startup founded by ex-NASA scientists. Terra Bella, was acquired by Google in 2014 for $500 million and that time it was known as Skybox Imaging.
प्र: Voiceless it cries, wingless flutters, toothless bites, mouth-less mutters. What is it? 1826 05b5cc619e4d2b4197774b74c
5b5cc619e4d2b4197774b74c- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर :
व्याख्या :
It is The Wind which cries without a voice, flutters without wings, bites toothless and mutters mouthless.
प्र: If y/(x - z) = (y + x)/z = x/y then find z : y : x ? 1822 05b5cc761e4d2b4197774fd4e
5b5cc761e4d2b4197774fd4e- 11:2:3false
- 23:2:4true
- 34:3:2false
- 42:3:4false
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 2. "3:2:4"
व्याख्या :
Answer: B) 3:2:4 Explanation: Given, y/(x - z) = (y + x)/z = x/yyz = xy + x2 - yz - xz ....(1)Also xy = yx-z ⇒x2 -xz = y2 ....(2)Using (1) and (2), we get yz = xy - yz + y22yz = xy + y22z = x + y Only option (B) satisfies the equation.
प्र: The number of ways in which six boys and six girls can be seated in a row for a photograph so that no two girls sit together is ? 1821 05b5cc6e2e4d2b4197774ec3e
5b5cc6e2e4d2b4197774ec3e- 12(6!)false
- 26! x 7false
- 36! x ⁷P₆true
- 4Nonefalse
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 3. "6! x ⁷P₆"
व्याख्या :
Answer: C) 6! x ⁷P₆ Explanation: We can initially arrange the six boys in 6! ways.Having done this, now three are seven places and six girls to be arranged. This can be done in ⁷P₆ ways. Hence required number of ways = 6! x ⁷P₆
प्र: A number is increased by 20% and then decreased by 20%, the final value of the number is ? 1817 05b5cc75ce4d2b4197774fc39
5b5cc75ce4d2b4197774fc39- 1increase by 2%false
- 2decrease by 3%false
- 3decrease by 4%true
- 4increase by 5%false
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 3. "decrease by 4%"
व्याख्या :
Answer: C) decrease by 4% Explanation: Here, x = 20 and y = - 20Therefore, the net % change in value=x + y + xy100 %= 20 + -20 + 20 × -20100% or - 4% Since the sign is negative, there is a decrease in value by 4%.
प्र: Which number replaces 'x' in the below figure ? 1813 05b5cc774e4d2b41977750052
5b5cc774e4d2b41977750052- 12false
- 29true
- 311false
- 412false
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 2. "9"
व्याख्या :
Answer: B) 9 Explanation: Here in 2nd column if you add the individual digits we get 3 + 7 + 0 =10 , 2 + 2 + 4 = 8 , 7 + 3 + 0 = 10 7 10 3 --> 7+3 =10 6 8 2 --> 6+2 =8 x 10 1 --> x+1 =10 Here we can observe that by adding 1st and 3rd column elements we get 2nd column elements --> x = 9
प्र: 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? 1810 05b5cc669e4d2b4197774bf4d
5b5cc669e4d2b4197774bf4d- 11/5false
- 21/6true
- 31/7false
- 41/8false
- उत्तर देखेंउत्तर छिपाएं
- Workspace
- SingleChoice
उत्तर : 2. "1/6"
व्याख्या :
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.

