IIT JEE प्रश्न और उत्तर का अभ्यास करें
8प्र: What has a spine but no bones? 7113 05b5cc672e4d2b4197774c0be
5b5cc672e4d2b4197774c0be- 1Mirrorfalse
- 2Booktrue
- 3Tablefalse
- 4None of the abovefalse
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उत्तर : 2. "Book"
व्याख्या :
Answer: B) Book Explanation: A book has a spine to hold all the pages, but it has no bones.
प्र: A Shopkeeper sells two articles at Rs.1000 each, making a profit of 20% on the first article and a loss of 20% on the second article. Find the net Profit or loss that he makes? 7096 05b5cc7bbe4d2b419777509d7
5b5cc7bbe4d2b419777509d7- 14%true
- 25%false
- 36%false
- 48%false
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उत्तर : 1. "4%"
व्याख्या :
Answer: A) 4% Explanation: SP of first article = Rs.1000 Profit = 20% CP = SP x 100100+P% = Rs. 25003 SP of Second Article = Rs.1000 Loss = 20% CP = SP x 100100-L% = Rs. 1250 So, Total SP = Rs.2000; Total CP = Rs.6250/3 As the CP is more than SP, he makes a loss. Loss = CP - SP = (6250/3) - 2000 = Rs.(250/3) So, Loss Percent = Lossx100/CP = 4%
प्र: Find the next number in te given series ? 5, 25, 61, 113, ... 7087 05b5cc718e4d2b4197774f4d1
5b5cc718e4d2b4197774f4d1- 1142false
- 2181true
- 3156false
- 4179false
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उत्तर : 2. "181"
व्याख्या :
Answer: B) 181 Explanation: Here the series follow the rule that 12+22 = 5 32+42 = 2552+62 = 61 72+82 = 113 SO NEXT IS, 92+102 = 181
प्र: A sweet seller sells 3/5th part of sweets at a profit of 10% and remaining at a loss of 5%. If the total profit is Rs 1500, then what is the total cost price of sweets ? 7080 05b5cc75ee4d2b4197774fc93
5b5cc75ee4d2b4197774fc93- 1Rs.37,500true
- 2Rs.36,400false
- 3Rs.37,415false
- 4Rs.36,500false
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उत्तर : 1. "Rs.37,500"
व्याख्या :
Answer: A) Rs.37,500 Explanation: Assume A be the cost price. Therefore,35×A×10100 - 25×A×5100 = 1500 => A = Rs 37,500.
प्र: What animal has the worst memory? 7077 05b5cc670e4d2b4197774c01b
5b5cc670e4d2b4197774c01b- 1Dogfalse
- 2Ratfalse
- 3Elephanttrue
- 4Dolphinfalse
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उत्तर : 3. "Elephant"
व्याख्या :
Answer: C) Elephant Explanation: Elephant has worst shortest memory and dolphin has longest memory in the Animal kingdom.
प्र: How many such pairs of digits are there in the number 421579368 each of which has as many digits between them in the number as when they are arranged in ascending order? 7067 05b5cc7f2e4d2b41977751e93
5b5cc7f2e4d2b41977751e93- 1Nonefalse
- 2Onefalse
- 3Twofalse
- 4Threetrue
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उत्तर : 4. "Three"
व्याख्या :
Answer: D) Three Explanation: Given Number: 4 2 1 5 7 9 3 6 8 Ascending order: 1 2 3 4 5 6 7 8 9 Hence the required pairs are 12, 49, 16
प्र: A boat takes 19 hours for travelling downstream from point A to point B and coming back to a point C which is at midway between A and B. If the velocity of the stream is 4 kmph and the speed of the boat in still water is 14 kmph, what is the distance between A and B ? 7066 15b5cc6e9e4d2b4197774ee41
5b5cc6e9e4d2b4197774ee41- 1180 kmtrue
- 2160 kmfalse
- 3140 kmfalse
- 4120 kmfalse
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उत्तर : 1. "180 km"
व्याख्या :
Answer: A) 180 km Explanation: Speed in downstream = (14 + 4) km/hr = 18 km/hr; Speed in upstream = (14 – 4) km/hr = 10 km/hr. Let the distance between A and B be x km. Then, x/18 + (x/2)/10 = 19 ⇔ x/18 + x/20 = 19 ⇒ x = 180 km.
प्र: Which Crop is Sown on the Largest Area in India? 7052 05b5cc6b5e4d2b4197774d55e
5b5cc6b5e4d2b4197774d55e- 1Wheatfalse
- 2Barleyfalse
- 3Ricetrue
- 4Maizefalse
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उत्तर : 3. "Rice"
व्याख्या :
Answer: C) Rice Explanation: India is the second largest producer of Rice in the World. Rice is the most cultivated crop in India. According to 2002-2003 census, about 33 million hectares of area in India was cultivated with Rice.