IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: A shopkeeper sells one-third of his goods at a profit of 10%, another one-third at a profit of 20%, and the rest at a loss of 6%.What is his overall profit percentage ? 1957 0

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    6%
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    गलत
  • 2
    8%
    सही
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  • 3
    10%
    सही
    गलत
  • 4
    12%
    सही
    गलत
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उत्तर : 2. "8%"
व्याख्या :

Answer: B) 8% Explanation: Let the shopkeeper buy 300g for Rs.300. Now he sells 100g for Rs.110, another 100g for Rs120, and the rest 100g for Rs94.    Therefore, the total amount he receives = Rs.110 + Rs.120 + Rs.94 = 324.    Therefore, the shopkeeper spends Rs.300 and gets back Rs.324.   Therefore, his profit percentage = 24300x100 % = 8%

प्र: Replace each letter for a unique digit so that the equation is correct 1444 0

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उत्तर :
व्याख्या :

(1+9+6+8+3) x (1+9+6+8+3) x (1+9+6+8+3) = 19683

प्र: A retailer buys product from a shopkeeper at discount of 40% on the list price (marked price) and sells them to the customer at a discount of 25% on the list price.What is his profit percentage ? 2216 0

  • 1
    10%
    सही
    गलत
  • 2
    15%
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    गलत
  • 3
    20%
    सही
    गलत
  • 4
    25%
    सही
    गलत
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उत्तर : 4. "25%"
व्याख्या :

Answer: D) 25% Explanation: Let the list price be Rs.100.    Therefore, the retailer is buying the products at Rs.60 and selling it to the customer at Rs.75, earning a profit of Rs.15.   Therefore, his percentage is = 1560x100 = 25%

प्र: In a Certain Country 1/2 of 5 = 3. If the same proportion holds, what is the value of 1/3 of 10 ? 1776 0

  • 1
    4
    सही
    गलत
  • 2
    6
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  • 3
    8
    सही
    गलत
  • 4
    10
    सही
    गलत
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उत्तर : 1. "4"
व्याख्या :

Answer: A) 4 Explanation: Let 1310 = x  => 3x = 10   Given that 125=3   Therefore, 52x = 10    => x = 10/3 = 4.

प्र: In a certain office, 1/3 of workers are women, 1/2 of the women are married and 1/3 of the married women have children. If 3/4  of the men are married and 2/3  of the married men have children, what part of the workers are without children? 1405 0

  • 1
    5/18
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    गलत
  • 2
    4/9
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    गलत
  • 3
    11/18
    सही
    गलत
  • 4
    17/36
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    गलत
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उत्तर : 3. "11/18"
व्याख्या :

Answer: C) 11/18 Explanation: Let the total number of workers be x. Then,    Number of women = x/3 and number of men = x - x/3  = 2x/3   Number of women having children = x/18   Number of men having children = x/3   Number of workers having children = (x/18) + (x/3) = 7x/18    Therefore, workers having no children = x - 7x/18 = 11/18 of all workers.

प्र: In which year was the Supreme Court of India established? 1772 0

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    1951
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  • 2
    1949
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  • 3
    1950
    सही
    गलत
  • 4
    1947
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    गलत
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उत्तर : 3. "1950"
व्याख्या :

Answer: C) 1950 Explanation: The Supreme Court of India was established in the year 1950.

प्र: The first Law Officer of the Government of India is the 4091 0

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    Union Law Minister
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  • 2
    Secreatary, Ministry of Law
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    Attorney-General for India
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  • 4
    Chief Justice of the Supreme Court
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उत्तर : 3. "Attorney-General for India"
व्याख्या :

Answer: C) Attorney-General for India Explanation: Attorney-General for India is the  first Law Officer of the Government of India. He is is the Indian government's chief legal advisor, and its primary lawyer in the Supreme Court of India. The Solicitor General of India is below the Attorney General for India, who is the secondary law officer of the country, assists the Attorney General, and is himself assisted by several Additional Solicitors General of India.

प्र: A Child has 1200 five rupee coins. He wants to place them in such a way that the number of rows and the number of columns remains the same. What is the minimum number of coins that he needs more for this purpose? 1876 0

  • 1
    125
    सही
    गलत
  • 2
    96
    सही
    गलत
  • 3
    35
    सही
    गलत
  • 4
    25
    सही
    गलत
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उत्तर : 4. "25"
व्याख्या :

Answer: D) 25 Explanation: We know that, to be in the form that the number of rows and the number of columns to be equal the number should be a perfect square (a2). Given number is 1200 The perfect number which is above and near to 1200 is 1225 which is 35  35. Therefore, The minimum number of coins he need is 25.

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