IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: How many medals has been bagged by Indian athletes at World Dwarf Games 2017 ? 1762 05b5cc6cbe4d2b4197774e0b8
5b5cc6cbe4d2b4197774e0b8- 134false
- 237true
- 339false
- 440false
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उत्तर : 2. "37"
व्याख्या :
Answer: B) 37 Explanation:
प्र: There are four prime numbers written in ascending order of magnitude. The product of the first three is 385 and of the last three is 1001. Find the fourth number ? 1762 05b5cc6dce4d2b4197774e974
5b5cc6dce4d2b4197774e974- 117false
- 219false
- 313true
- 411false
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उत्तर : 3. "13"
व्याख्या :
Answer: C) 13 Explanation: (385/1001) = 5/13 First Number is 5 => Fourth number is 13
प्र: The mean of 100 observations is 40. It is found that an observation 84 was misread as 48. Then the correct mean is ? 1762 05b5cc6c0e4d2b4197774dab2
5b5cc6c0e4d2b4197774dab2- 140.36true
- 241.24false
- 341.92false
- 442.05false
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उत्तर : 1. "40.36"
व्याख्या :
Answer: A) 40.36 Explanation: Given, mean of 100 observations is 40 => Total of 100 observations = 40 x 100 = 4000 84 is misread as 48 => Difference = 84 - 48 = 36 => Now, new total of 100 observations = 4000 + 36 = 4036 Correct Mean = 4036/100 = 40.36
प्र: 640 ml of a mixture contains milk and water in ratio 6:2. How much of the water is to be added to get a new mixture containing half milk and half water ? 1761 05b5cc731e4d2b4197774f7e7
5b5cc731e4d2b4197774f7e7- 1360 mlfalse
- 2320 mltrue
- 3310 mlfalse
- 4330 mlfalse
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उत्तर : 2. "320 ml"
व्याख्या :
Answer: B) 320 ml Explanation: Here total parts of milk and water in the solution is 6+2 = 8 parts. 1part = 640/8 = 80 old mixture contains 6parts of milk and 2 parts of water(6:2). To get new mixture containing half milk and half water, add 4parts of water to the old mixture then 6:(2+4) to make the ratio same. i.e, 4 x 80 = 320 ml.
प्र: Who has been appointed by Flipkart as an in-charge of the newly acquired e-Bay India business ? 1760 05b5cc6cce4d2b4197774e158
5b5cc6cce4d2b4197774e158- 1Anil Gotetitrue
- 2S Aparnafalse
- 3Rajeev Kumarfalse
- 4Kalyan Krishnamurthyfalse
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उत्तर : 1. "Anil Goteti"
व्याख्या :
Answer: A) Anil Goteti Explanation:
प्र: A Product is supported each week by the same three Product supporters. Last month the first supporter took 440 calls, the second took 360 calls, and the third took 300 calls. This month the job will consists of 1500 calls. If the three supporters each increase their work proportionately, how many more calls will the second supporter take this month than last month ? 1760 05b5cc745e4d2b4197774fa40
5b5cc745e4d2b4197774fa40- 1131 callstrue
- 2160 callsfalse
- 3491 callsfalse
- 4600 callsfalse
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उत्तर : 1. "131 calls"
व्याख्या :
Answer: A) 131 calls Explanation: 1st supporter recieve 440 calls 2nd supporter recieve 360 calls 3rd supporter recieve 300 calls So total calls = 1100 calls ; Calls this month= 1500 So remaining calls to be distributed is 400 So Now Ratio 1st:2nd:3rd ==> 440:360:300=> 22:18:15 Now No. of More Calls 2nd supporter will get => [18/(22+18+15)] x 400=> (18/55) x 400 => 131 CallsSo 131 more Calls than last month.
प्र: An individual deposited 20% of 25% of 30% of what he had into his account with a bank. If he deposited Rs.750, how much was he having initially with him before depositing ? 1759 05b5cc71ee4d2b4197774f595
5b5cc71ee4d2b4197774f595- 1Rs. 38000false
- 2Rs. 47000false
- 3Rs. 50000true
- 4Rs. 35000false
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उत्तर : 3. "Rs. 50000"
व्याख्या :
Answer: C) Rs. 50000 Explanation: Let 'x' be the amount he had in the bank. => 20/100(25/100(30/100(x))) = 750 x = 750 x 8000/120 = Rs. 50000
प्र: What can go up a chimney down, but cannot go down a chimney up? 1759 05b5cc645e4d2b4197774bba9
5b5cc645e4d2b4197774bba9- उत्तर देखेंउत्तर छिपाएं
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उत्तर :
व्याख्या :
An Umbrella. Yes, when it is open it can't be fit under a chimney but when it is closed it can be fit down a chimney.

