IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Ali and Faizer are 27m apart. They both start walking and meet 9 hrs later, if they travel in the same direction and meet after 3 hrs if they walk in opposite dirction, Ali’s speed must most likely be ? 1748 05b5cc715e4d2b4197774f44f
5b5cc715e4d2b4197774f44f- 19 m/hfalse
- 23 m/hfalse
- 36 m/htrue
- 412 m/hfalse
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उत्तर : 3. "6 m/h"
व्याख्या :
Answer: C) 6 m/h Explanation: let, speed of Ali=X mph and Faizer=Y mph Now, relative speed when Ali is walking int the same direction with Faizer= (X-Y)mphhence, according to question, 27/(X-Y)=9 ; solving X-Y=3; --- (1) Now relative speed when walking in the opposite direction= (X+Y) mphhence, according to question, 27/(X+y)=3; solving X+Y=9; --- (2) solving 1 and 2 we get X=6 and Y=3, where X is the speed of Ali.
प्र: At what temperature do the Fahrenheit and celcius scales give the same reading? 1748 05b5cc7b6e4d2b4197775090a
5b5cc7b6e4d2b4197775090a- 1212 degreesfalse
- 232 degreeesfalse
- 3-40 degreeestrue
- 40 degreeesfalse
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उत्तर : 3. "-40 degreees"
व्याख्या :
Answer: C) -40 degreees Explanation: We want the temperature when F=C. We know that, F = C x 95 + 32 So substituting C For F, we have C = -40o Therefore, C = -40. Thus when C = -40, we have C = F
प्र: The ratio of present ages of X and Y is 4:5. Which of the following can't be the ratio of ages of X and Y, 20 years ago ? 1747 05b5cc73de4d2b4197774f925
5b5cc73de4d2b4197774f925- 12 : 5false
- 28 : 15false
- 39 : 10true
- 43 : 5false
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उत्तर : 3. "9 : 10"
व्याख्या :
Answer: C) 9 : 10 Explanation: The ratio of X and Y ages at present is 4:5. Then, the ratio 20 years ago will not be more than the ratio at present. So, from the options 9:10 is not satifying => its ratio is 0.9 which is greater than presnt ratio of 0.8.
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उत्तर :
व्याख्या :
12 N in a C means 12 Numbers in a Clock.
प्र: A girl want to read a complete book. She read 2/5 part of a book on 1st day, 34% on second day and remaining pages in next two days. On those two days she read equal number of pages. If she read 52 pages on last day, then find out total number of pages that the book contain ? 1747 05b5cc6cbe4d2b4197774e108
5b5cc6cbe4d2b4197774e108- 1400true
- 2525false
- 3325false
- 4475false
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उत्तर : 1. "400"
व्याख्या :
Answer: A) 400 Explanation: Let the total number of pages in the book be 'x'. From given data, 2x/5 + 34x/100 + 52 + 52 = x => 40x + 34x + 10400 = 100x => 26x = 10400 => x = 400. Hence, total pages in the book are 400.
प्र: Read each part of the sentence to find out if there is any error in it. The error, if any, will be in one part of the sentence. The number of that part is the answer. As much as i admire him for his talent(1) / and endeavor to achieve success(2)/ I cannot forgive him for being so(3)/rude to the not so well to do ones(4) 1747 05b5cc6cae4d2b4197774e0a4
5b5cc6cae4d2b4197774e0a4- 1(1)true
- 2(2)false
- 3(3)false
- 4(4)false
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उत्तर : 1. "(1)"
व्याख्या :
Answer: A) (1) Explanation: The error lies in part (1). As the phrase 'as much as' needs to be replaced with 'much as I'. This is because we use 'as much as' for comparing two qualities or things. But here in the given sentence a contrast is given in the latter part of the sentence. So we need a conjunction like 'even though' 'although' etc... 'Much as I' also serves the same purpose.
प्र: Find the next number in the given number series? 11, 5.5, 10, 6.5, 9, ? 1747 05b5cc61ee4d2b4197774b753
5b5cc61ee4d2b4197774b753- 16.5false
- 27.5true
- 38.5false
- 410.5false
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उत्तर : 2. "7.5"
व्याख्या :
Answer: B) 7.5 Explanation: The given number series follows a pattern that 11 11 - 5.5 = 5.5 5.5 + 4.5 = 10 10 - 3.5 = 6.5 6.5 + 2.5 = 9 9 - 1.5 = 7.5 Hence, the next number in the given number series is 7.5.
प्र: In terms of territorial extent, the largest district of India is located in which of the following states ? 1746 05b5cc709e4d2b4197774f2b9
5b5cc709e4d2b4197774f2b9- 1Rajasthanfalse
- 2Tamil Nadufalse
- 3Jammu & Kashmirfalse
- 4Gujarattrue
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उत्तर : 4. "Gujarat"
व्याख्या :
Answer: D) Gujarat Explanation: Kachchh district is the largest in India in terms of territorial extent, located in the state of Gujarat.The second largest district is Leh in Jammu & Kashmir.