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प्र: A man reads 3/7 of a book on a day and 2/5 of the remaining, on the second day. If the number of pages still unread are 36, how many pages did the book contain ? 1611 0

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    105
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    101
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  • 3
    98
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  • 4
    109
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    गलत
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उत्तर : 1. "105"
व्याख्या :

Answer: A) 105 Explanation: Let number of pages in a book = p According to questions p - [3p/7 + (2/5 x 4p/7)] = 36 = p - 23p/35 = 36 => 12p = 36 × 35 p = 105

प्र: If 35% of a number is 24 less than 50% of that number, then the number is ? 1611 0

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    80
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    160
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  • 3
    100
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  • 4
    120
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उत्तर : 2. "160"
व्याख्या :

Answer: B) 160 Explanation: Let the number be n. Then, 50% of n - 35% of n = 24 50/100 n - 35/100 n = 24 n = (24 x 100)/15 = 160.

प्र: When 5% is lost in grinding Maize, a country has to import 20 million bags; but when only 2% is lost, it has to import only 15 million bags. Find the quantity of Maize, which grows in the country ? 1610 0

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    188 million
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  • 2
    166 2/3 million
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  • 3
    192 3/4 million
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  • 4
    None
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उत्तर : 2. "166 2/3 million"
व्याख्या :

Answer: B) 166 2/3 million Explanation: 5% - 2% = 3%=> 3% ------ 5 million bags 100% ---- ? => 166 2/3 million bags.

प्र: The compound interest on a certain sum for 2 years at 10% per annum is Rs. 1155. The simple interest on the same sum for double the time at half the rate percent per annum is ? 1610 1

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    Rs. 1100
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  • 2
    Rs. 5500
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  • 3
    Rs. 1400
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    गलत
  • 4
    Rs. 4120
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उत्तर : 1. "Rs. 1100"
व्याख्या :

Answer: A) Rs. 1100 Explanation: Let the sum be Rs.x. Then,     x1+101002-x=1155   ⇒x11102-1=1155   => x =5500   sum = Rs. 5500.   So, S.I = Rs. 5500×5×4100 = 1100

प्र: Which is the oldest tennis tournament in the world and also prestigious? 1609 0

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    Wimbledon
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  • 2
    US Open
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  • 3
    French Open
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  • 4
    Australian Open
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उत्तर : 1. "Wimbledon"
व्याख्या :

Answer: A) Wimbledon Explanation: Wimbledon Tournament in the city London, is the prestigious and the oldest tournament in the world.

प्र: In 1990 a person is 15 years old. In 2000 that same person is 5 years old. How can this be possible? 1609 0

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उत्तर :
व्याख्या :

It can be possible in only B.C. i.e, Before Christ. That was about 2000 years ago. Given In 1990 B.C = 2000 + 1990 = 3990 years ago, a person is 15 years Old => In 1995 B.C = 2000 + 1995 = 3995 years ago, the same person will be 10 years Old Therefore, In 2000 B.C = 2000 + 2000 = 4000 years ago, the same person will be 5 years Old.

प्र: What causes brownian motion in colloids? 1607 0

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    coagulation of particles and the dispersed phase
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  • 2
    erratic flashes of light
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    molecules of the dispersion medium colliding with dispersed phase particles
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  • 4
    All the above
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उत्तर : 3. "molecules of the dispersion medium colliding with dispersed phase particles"
व्याख्या :

Answer: C) molecules of the dispersion medium colliding with dispersed phase particles Explanation: When their is a colloid in the solution, then it will show the Brownian movement, such as dust particle in the air will show the Brownian movement.   Hence, Brownian movement arises due to the impact of the molecules of the dispersion medium with the colloidal particles. It has been postulated that the impact of the molecules of dispersion medium on the colloidal particles are unequal.   This leads to the zig-zag (random) motion of the colloidal particles.

प्र: Question : What is the sum which earned interest ? Statements : a. The total simple interest was Rs. 9000 after 9 years.b. The total of sum and simple interest was double of the sum after 6 years. 1607 0

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    Only a is sufficient
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    Neither a nor b is sufficient
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    Only b is sufficient
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  • 4
    Both a and b sufficient
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उत्तर : 4. "Both a and b sufficient"
व्याख्या :

Answer: D) Both a and b sufficient Explanation: Let the sum be Rs. x a. gives, S.I = Rs. 9000 and time = 9 years. b. gives, Sum + S.I for 6 years = 2 x Sum --> Sum = S.I for 6 years. Now, S.I for 9 years = Rs. 9000 S.I for 1 year = Rs. 9000/9 = Rs. 1000. S.I for 6 years = Rs. (1000 x 6)= Rs. 6000. --> x = Rs. 6000 Thus, both a and b are necessary to answer the question.

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