IIT JEE Practice Question and Answer
8Q: Rs. 7444 is divided among 5 ladies, 3 gents and 3 girls. The ratio of share of a lady, a gents and a girl is 7: 4: 3. What is the share of gents ? 2973 05b5cc741e4d2b4197774f9cc
5b5cc741e4d2b4197774f9cc- 1Rs. 1595.14true
- 2Rs. 1793.4false
- 3Rs. 595.14false
- 4Rs. 1551.5false
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Answer : 1. "Rs. 1595.14"
Explanation :
Answer: A) Rs. 1595.14 Explanation: Ratio of the share of a lady, a gents and a girl is 7 : 4 : 3No of ladies, gents and girls are 5, 3, 3Thus effective ratio of ladies, gents and girls is 7 x 5 : 4 x 3 : 3 x 3 = 35 : 12 : 9so part of gents = (12/56) x 7444 = Rs. 1595.142so part of 1 gents = 1595.142/3 = Rs. 531.71.
Q: Which statement best describes Arteries? 2970 05b5cc6a5e4d2b4197774ccb0
5b5cc6a5e4d2b4197774ccb0- 1They have thin walls and transport blood away from the heartfalse
- 2They have thick walls and transport blood toward the heartfalse
- 3They have thin walls and transport blood toward the heartfalse
- 4They have thick walls and transport blood away from the hearttrue
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Answer : 4. "They have thick walls and transport blood away from the heart"
Explanation :
Answer: D) They have thick walls and transport blood away from the heart Explanation: Because arteries have to have thick walls for use of protection. Its when you get to veins where the walls get thinner. And the use of the heart is to pump blood to all of the cells and organs in the body so it would be to transport blood away from the heart. i.e. Arteries = Away from the Heart Veins = Back to the Heart.
Q: How many 7 digit numbers can be formed using the digits 1, 2, 0, 2, 4, 2, 4? 2965 05b5cc7d1e4d2b41977751295
5b5cc7d1e4d2b41977751295- 1120false
- 2360true
- 3240false
- 4424false
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Answer : 2. "360"
Explanation :
Answer: B) 360 Explanation: There are 7 digits 1, 2, 0, 2, 4, 2, 4 in which 2 occurs 3 times, 4 occurs 2 times. Number of 7 digit numbers = 7!3!×2! = 420 But out of these 420 numbers, there are some numbers which begin with '0' and they are not 7-digit numbers. The number of such numbers beginning with '0'. =6!3!×2! = 60 Hence the required number of 7 digits numbers = 420 - 60 = 360
Q: Antibiotics are mostly obtained from 2961 15b5cc678e4d2b4197774c152
5b5cc678e4d2b4197774c152- 1Virusesfalse
- 2Fungitrue
- 3Bacteriafalse
- 4Angiospermsfalse
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Answer : 2. "Fungi"
Explanation :
Answer: B) Fungi Explanation:
Q: Which city is located on the banks of the river Mula-Mutha? 2961 05b5cc6b1e4d2b4197774d309
5b5cc6b1e4d2b4197774d309- 1Punetrue
- 2Nagpurfalse
- 3Ahmedabadfalse
- 4Suratfalse
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Answer : 1. "Pune"
Explanation :
Answer: A) Pune Explanation: The Mula-Mutha is a river in India, formed by the confluence of the Mula and Mutha rivers in the city of Pune, which later meets the Bhima River, which itself later meets the Krishna River and finally emptying to the Bay of Bengal.
Q: A bird lover was asked how many birds he had in the basket. He replied that there were all parrots but six, all pigeons but six, and all koel but six. How many birds he had in the basket in all ? 2960 05b5cc71ee4d2b4197774f5a9
5b5cc71ee4d2b4197774f5a9- 18false
- 218false
- 39true
- 410false
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Answer : 3. "9"
Explanation :
Answer: C) 9 Explanation: There were all parrots but six means that six birds were not parrots but only pigeons and koels. Similarly, number of parrots + number of koels = 6 and number of parrots + number of pigeons = 6. This is possible when there are 3 parrots, 3 pigeons and 3 koels i.e. 9 birds in all.
Q: Compound interest earned on a sum for the second and the third years are Rs.1200 and Rs.1440 respectively. Find the rate of interest ? 2959 05b5cc6ebe4d2b4197774eeb9
5b5cc6ebe4d2b4197774eeb9- 120% p.atrue
- 215% p.afalse
- 318% p.afalse
- 424% p.afalse
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Answer : 1. "20% p.a"
Explanation :
Answer: A) 20% p.a Explanation: Rs.1440 - 1200 = Rs.240 is the interest on Rs.1200 for one year. Rate of interest = (100 x 240) / (1200) = 20% p.a
Q: Tennis rackets and ballpoint pens are 2954 05b5cc60ae4d2b4197774b5ab
5b5cc60ae4d2b4197774b5ab- 1complementary goodsfalse
- 2independent goodstrue
- 3inferior goodsfalse
- 4substitute goodsfalse
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Answer : 2. "independent goods"
Explanation :
Answer: B) independent goods Explanation: Tennis rackets and ballpoint pens are two independent goods. Since, one doesn't depend on the other.