IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: Indicating to a photo, Mukesh said that this Man’s son is my father’s son. Who was there in the photo ? 1381 05b5cc6c5e4d2b4197774dd3c
5b5cc6c5e4d2b4197774dd3c- 1Mukesh Unclefalse
- 2Mukesh Brotherfalse
- 3Mukesh Grandfatherfalse
- 4Mukesh Fathertrue
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उत्तर : 4. "Mukesh Father"
व्याख्या :
Answer: D) Mukesh Father Explanation: That man's son means Mukesh => Mukesh father's son is Mukesh => It is Mukesh's father.
प्र: What will come in place of the question mark(?) in the following question ? 56% of 870 + 82% of 180 = 32% of 90 + ? 1672 05b5cc6c5e4d2b4197774dd37
5b5cc6c5e4d2b4197774dd37- 1777false
- 2666false
- 3606true
- 4789false
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उत्तर : 3. "606"
व्याख्या :
Answer: C) 606 Explanation: 56% of 870 = 56x870/100 = 487.20 82% of 180 = 82x180/100 = 147.60 32% of 90 = 32x90/100 487.20 + 147.6 - 28.8 = ? ? = 634.8 - 28.8 ? = 606.
प्र: "National Volunteer Day" is observed on ____ ? 1435 05b5cc6c5e4d2b4197774dd2d
5b5cc6c5e4d2b4197774dd2d- 11st Octoberfalse
- 221st Septembertrue
- 311th Octoberfalse
- 429th Septemberfalse
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उत्तर : 2. "21st September"
व्याख्या :
Answer: B) 21st September Explanation: "National Volunteer Day" & "International Peace Day" are observed on 21st september every year.
प्र: Kamal consistently runs 240 meters a day and on Saturday he runs for 400 meters. How many kilometers will he have to run in four weeks ? 2227 05b5cc6c5e4d2b4197774dd23
5b5cc6c5e4d2b4197774dd23- 15.75 kmsfalse
- 27.36 kmstrue
- 38.2 kmsfalse
- 46.98 kmsfalse
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उत्तर : 2. "7.36 kms"
व्याख्या :
Answer: B) 7.36 kms Explanation: Total running distance in four weeks = (24 x 240) + (4 x 400) = 5760 + 1600 = 7360 meters = 7360/1000 => 7.36 kms
प्र: Standing on a platform, Rajan told Kumar that Varanasi was more than 20 km but less than 25 km from there. Kumar knew that it was more than 18 km but less than 22 km from there. If both of them are correct, then which of the following is the true distance of Varanasi from the platform ? 1555 05b5cc6c5e4d2b4197774dd28
5b5cc6c5e4d2b4197774dd28- 120 kmfalse
- 222 kmfalse
- 319 kmfalse
- 421 kmtrue
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उत्तर : 4. "21 km"
व्याख्या :
Answer: D) 21 km Explanation: From both voices it can be conclude that, Varanasi is more than 20km but less than 22km away. That is it is 21 kms away.
प्र: There are 1650 students in a college. The difference between the number of boys and girls in the college is 400. What is the percentage of girls in the college ? 1231 05b5cc6c5e4d2b4197774dd1e
5b5cc6c5e4d2b4197774dd1e- 149false
- 234false
- 343false
- 438true
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उत्तर : 4. "38"
व्याख्या :
Answer: D) 38 Explanation: Let no. of boys be 'B' and no. of girls be 'G' Here from given data, B + G = 1650 .....(1) B - G = 400 .....(2) From (1) & (2), we get 2B = 2050 => B = 1025 => G = 1650 - 1025 = 625 Hence, the % of girls = 625 x 100/1650 => 38% (approx).
प्र: In a certain code 'Black' means Orange', 'Orange' means Violet','Violet' means 'Green', 'Green' means 'White' ,'White', means 'Yellow' and 'Yellow' means 'Sky blue', what is the colour of coal ? 8769 05b5cc6c5e4d2b4197774dd14
5b5cc6c5e4d2b4197774dd14- 1Orangetrue
- 2Sky Bluefalse
- 3Violetfalse
- 4Yellowfalse
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उत्तर : 1. "Orange"
व्याख्या :
Answer: A) Orange Explanation: The colour of coal is Black. In the code language ,black is called orange. So, the colour of coal is Orange.
प्र: Time taken by P alone to finish a work is 50% more than the time taken by P and Q together. Q is thrice as efficient as R. If Q and R together can complete the work in 22.5 days, then how many days will P alone take to complete the work ? 3604 05b5cc6c5e4d2b4197774dd05
5b5cc6c5e4d2b4197774dd05- 117 daysfalse
- 211 daysfalse
- 315 daystrue
- 416 daysfalse
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उत्तर : 3. "15 days"
व्याख्या :
Answer: C) 15 days Explanation: We know that Time is inversely proportional to Efficiency Here given time ratio of P & P+Q as P/P+Q = 150/100 = 3:2 Efficiency ratio of P & Q as P:Q = 2:1 ....(1) Given Efficiency ratio of Q & R as Q:R = 3:1 ....(2) From (1) & (2), we get P:Q:R = 6:3:1 P alone can finish the work in 22.5(3+1)/6 = 15 days.