IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: A jeep travels a certain distance taking 6 hrs in forward journey, during the return journey increased speed 12km/hr takes the times 4 hrs. What is the distance travelled by the jeep is ? 1721 0

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    244 km
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    144 km
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    444 km
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  • 4
    344 km
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उत्तर : 2. "144 km"
व्याख्या :

Answer: B) 144 km Explanation: Given a jeep travels a certain distance taking 6 hrs in forward journeyDuring the return journey, it takes 4 hrs with an increased speed 12 km/hrLet 'x' be the distance.Now, speed is given by distance/time.Here the difference between both speeds = 12  x4 - x6 = 12  3x - 2x12 = 12   => x = 144 km   Therefore, the distance travelled by the jeep in forward or return journey is x = 144 km.

प्र: A sum is equally invested in two different schemes on CI at the rate of 15% and 20% for two years. If interest gained from the sum invested at 20% is Rs. 528.75 more than the sum invested at 15%, find the total sum? 1721 0

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    Rs. 7000
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    Rs. 4500
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    Rs. 9000
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    Rs. 8200
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उत्तर : 3. "Rs. 9000"
व्याख्या :

Answer: C) Rs. 9000 Explanation: Let Rs. K invested in each scheme Two years C.I on 20% = 20 + 20 + 20x20/100 = 44% Two years C.I on 15% = 15 + 15 + 15x15/100 = 32.25% Now, (P x 44/100) - (P x 32.25/100) = 528.75 => 11.75 P = 52875 => P = Rs. 4500   Hence, total invested money = P + P = 4500 + 4500 = Rs. 9000.

प्र: Find the C.I. on Rs. 15,225 for 9 months at 16% per annum compounded quarterly ? 1720 0

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    Rs. 1911
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    Rs. 1909
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    Rs. 1901
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  • 4
    Rs. 1907
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उत्तर : 3. "Rs. 1901"
व्याख्या :

Answer: C) Rs. 1901 Explanation: P = Rs. 15225, n = 9 months = 3 quarters, R = 16% p.a. per quarter.   Amount = 15225x1+41003   = (15225 x 26/25 x 26/25 x 26/25) = Rs. 17126.05   => C.I. = 17126 - 15625 = Rs. 1901.05.

प्र: Find the remainder when 629 is divided by 5 ? 1720 0

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    0
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    1
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    3
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    5
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उत्तर : 2. "1"
व्याख्या :

Answer: B) 1 Explanation: All powers of 6 has 6 in units place so answer will definitely be 1.

प्र: At an examination in which maximum marks are 500. K got 10% less than L, L got 25% more than M and M got 20% less than N. If K got 360 marks what percentage of marks was obtained by N ? 1719 0

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    80
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    87
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    78
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    76
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उत्तर : 1. "80"
व्याख्या :

Answer: A) 80 Explanation: Let marks obtained by N = x M's marks = 0.80x L's marks = 1.25 (0.80x) K's marks = (0.90) (1.25) (0.80x) = 0.9x But 0.9x = 360 ⇒ x = 400 Percentage of Marks obtained by N = 400 x 100/500 = 80%

प्र: R enter into a partnership in the ratio 2 : 3 : 5 . After 2 months, P increases his share 20% and Q by 10%. If the total profit at the end of one year is Rs 1,90,500, what amount will 'R' receive at the end of year as share in profit ? 1719 0

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    Rs. 90500
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  • 2
    Rs. 87500
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  • 3
    Rs. 88900
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  • 4
    Rs. 90000
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उत्तर : 4. "Rs. 90000"
व्याख्या :

Answer: D) Rs. 90000 Explanation: Ratio of investments for 1 year => (P : Q : R) = (2x2 + 2.4x10) : (3x2 + 3.3x10) : (5x12) => (P : Q : R) = 28 : 39 : 60 Now R share = 190500 x 60/127 = Rs. 90000.

प्र: Sensitive data is always classified. 1719 0

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    TRUE
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  • 2
    FALSE
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उत्तर : 2. "FALSE"
व्याख्या :

Answer: B) FALSE Explanation: FALSE. Sensitive data is NOT always classified.   Sensitive information is data that must be protected from unauthorized access to safeguard the privacy or security of an individual or organization. There are three main types of sensitive information: 1. Personal information 2. Business information 3. Classified information Data is "Classified" based on the damage that might result from unauthorized disclosure. Some data is Sensitive, but will not necessarily do harm to the country if released publicly - such as PII- which could do harm to individuals if released but not necessarily the country.

प्र: What does the central nervous system consists of? 1719 0

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    Brain
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    Spinal cord
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    Nerves
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    All the above
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उत्तर : 4. "All the above"
व्याख्या :

Answer: D) All the above Explanation: The central nervous system CNS is responsible for integrating sensory information and responding accordingly. It consists of two main components::  1. The brain  2. The spinal cord The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement. The brain can be divided into four main lobes: temporal, parietal, occipital and frontal.   The spinal cord serves as a conduit for signals between the brain and the rest of the body.

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