CAT प्रश्न और उत्तर का अभ्यास करें
8प्र: What percent is 120 of 85 ? 1801 05b5cc6dde4d2b4197774ea0a
5b5cc6dde4d2b4197774ea0a- 1133.33 %false
- 2141.17 %true
- 3145.54 %false
- 4139.29 %false
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उत्तर : 2. "141.17 %"
व्याख्या :
Answer: B) 141.17 % Explanation: Px85100=120 => p = 12000/85 = 141.17 %
प्र: What has keys but no locks? 1801 05b5cc69be4d2b4197774c810
5b5cc69be4d2b4197774c810- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
A Keyboard has keys but no locks.
प्र: What is the Focus of an Earthquake? 1801 05b5cc6a3e4d2b4197774cc0f
5b5cc6a3e4d2b4197774cc0f- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
A Focus of an earthquake is the location where the earthquake begins. The ground ruptures at this spot, then seismic waves radiate outward in all directions. At this focus point, the release of energy due to faulting actually occurs during an earthquake. The point directly above the focus on the surface is called Epicenter. The focus is also called as Hypocenter as it is the synonym of the focus.
प्र: If 1/a+1/b+1/c = 1/(a+b+c) where a+b+c not equals '0', abc not equals '0', What is the value of (a+b) (b+c) (a+c) ? 1801 05b5cc709e4d2b4197774f258
5b5cc709e4d2b4197774f258- 13false
- 22false
- 31false
- 40true
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उत्तर : 4. "0"
व्याख्या :
Answer: D) 0 Explanation: Let assume the value of a,b &c that will satisfy the equation.so a=1,b=1,c= -1 or a=1,b= -1 &c=1 or a= -1,b=1,c=1here all three cases satisfy the equationassume any one a=1,b=1,c= -1 Hence (a+b)(b+c)(c+a)=(1+1)(1-1)(-1+1) = 0
प्र: Karthik could cover a distance of 200 km in 22 days while resting for 2 hrs. per day. In how many days (approx) he will cover a distance of 250 km while resting for 2 hrs. per day and moving with 2/3rd of the previous speed ? 1801 05b5cc6cee4d2b4197774e203
5b5cc6cee4d2b4197774e203- 141.25 daystrue
- 237.5 daysfalse
- 339.75 daysfalse
- 440 daysfalse
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उत्तर : 1. "41.25 days"
व्याख्या :
Answer: A) 41.25 days Explanation: Given Karthik can cover the distance of 200 kms resting 2 hrs per day in 22 days. Let the initial speed be '1' Hence, Time = 22(24hrs - 2) Noe new speed = 2/3 Let the number of days he take be 'D' Therefore, 2224-2x3200=D24-2x2250 D = 11 x 3 x 5/4 = 41.25 days. = 41 1/4 days.
प्र: Which technology is used in compact disks? 1800 15b5cc690e4d2b4197774c427
5b5cc690e4d2b4197774c427- 1Lasertrue
- 2Mechanicalfalse
- 3Electricalfalse
- 4Electro magneticfalse
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उत्तर : 1. "Laser"
व्याख्या :
Answer: A) Laser Explanation: Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982. These are actually made to replace floppy disks that were used to store files and programs from the computer. The format was originally developed to store and play only sound recordings but was later adapted for storage of data (CD-ROM). These CD's uses Laser technology.
प्र: Three unbiased coins are tossed. What is the probability of getting at most two heads ? 1800 05b5cc764e4d2b4197774fd76
5b5cc764e4d2b4197774fd76- 14/3false
- 22/3false
- 33/2false
- 43/4true
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उत्तर : 4. "3/4"
व्याख्या :
Answer: D) 3/4 Explanation: Let S be the sample space.Here n(S)= 23 = 8Let E be the event of getting atmost two heads. Then,n(E) = {(H,T,T), (T,H,T), (T,T,H), (H,H,T), (T,H,H), (H,T,H)}Required probability = n(E)/n(S) = 6/8 = 3/4.
प्र: A trader marked the price of the T.V. 30% above the cost price of the T.V. and gave the purchaser 10% discount on the marked price, thereby gaining Rs.340. Find the cost price of the T.V ? 1800 05b5cc6e0e4d2b4197774eb9d
5b5cc6e0e4d2b4197774eb9d- 1Rs. 2000true
- 2Rs. 1600false
- 3Rs. 2200false
- 4Rs. 2100false
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उत्तर : 1. "Rs. 2000"
व्याख्या :
Answer: A) Rs. 2000 Explanation: Let 'x' be the cost price.Now Marked price = x + 30x/100 = 13x/1010% discount = 10/100 x 13x/10 = 13x/100 Selling price = 13x/10 - 13x/100 = 117x/100Given gain = 340Here gain = 117x/100 - x = 17x/100 = 340 => x = Rs. 2000.

