IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: A train for Fathehpur leaves for every 2 hrs 30 min from Agra station. An announcement was made that train left 37 mins ago and next train comes at 17:00hrs. At what time was the announcement made ? 2219 0

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    15:07 hrs
    सही
    गलत
  • 2
    15:20 hrs
    सही
    गलत
  • 3
    15:05 hrs
    सही
    गलत
  • 4
    15:00 hrs
    सही
    गलत
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उत्तर : 1. "15:07 hrs"
व्याख्या :

Answer: A) 15:07 hrs Explanation: Next train comes at 17:00 hrs.So, last train will be = 17:00hrs - 2:30hrs= 14:30hrsAnnouncement made after 37 min of the last train.S0, 14:30hrs + 00:37 min= 15:07 hrs.

प्र: Name the two Indian companies that have been named in the list of world's most ethical companies by American think tank Ethisphere Institute. 1040 0

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    Dabur and Tata
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  • 2
    Mahindra and Tata
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    गलत
  • 3
    Patanjali and Dabur
    सही
    गलत
  • 4
    Tata Steel and Wipro
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    गलत
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उत्तर : 4. "Tata Steel and Wipro"
व्याख्या :

Answer: D) Tata Steel and Wipro Explanation: Two Indian companies, Tata SteelBSE and Wipro have been named in the list of world’s most ethical companies by American think tank Ethisphere Institute. Ethisphere honors those companies who recognize their role in society to influence and drive positive change in the business community and organizations around the world. In 2017, 124 honorees were spanning five continents, 19 countries, and 52 industry sectors. Wipro is one of the two information technology companies named in the list, the other being Xerox Corporation.

प्र: Prashanth sold a album for $ 735 and made a profit of 22.5% . The cost price of the album went up by $120 and so Prashanth increased the selling price by $120. What is his profit % now ? 1449 0

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    19.32 %
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    गलत
  • 2
    18.75 %
    सही
    गलत
  • 3
    21.41 %
    सही
    गलत
  • 4
    22 %
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उत्तर : 2. "18.75 %"
व्याख्या :

Answer: B) 18.75 % Explanation: Prashanth sold a album for $ 735 and made a profit of 22.5% .CP = 735 x 100/122.5 = Rs. 600New CP = 600 + 120 = Rs. 720New SP = 735 + 120 = Rs. 855. Profit = Rs. 135. profit % = 100 x 135/720 = 18.75%.

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उत्तर : 3. "Both a & b follows"
व्याख्या :

Answer: C) Both a & b follows Explanation: According to the statement, Government has spoiled financial institutions by appointing bureaucrats as Directors. This means that only those persons should be appointed as Directors who are experts in finance and are acquainted with the financial work of the institute. So, both a and b follows.

प्र: In a certain language, SUPERMAN is coded as TTQDSLBM. How is SPIDERMAN coded in that language ? 7848 0

  • 1
    TOJCFQNZO
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    गलत
  • 2
    TOJCFSLBM
    सही
    गलत
  • 3
    TOJCFONZO
    सही
    गलत
  • 4
    TOJCOSLBM
    सही
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उत्तर : 1. "TOJCFQNZO"
व्याख्या :

Answer: A) TOJCFQNZO Explanation: There is two sequence. S(odd) P(Even) I(odd) D(even) E(odd) R(even) M(odd) A(even) N(odd)For odd sequence, we want to write next alphabet of thatand for even, we want to write previous alphabet of that. TOJCFQNZO is the Answer.

प्र: In a class there are certain no. of boys and girls. If 15 girls are absent then no. of boys will be twice that of girls. If 45 boys are absent then girls strength will be 5 times that of boys. Find number of boys actually present ? 1835 0

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    40
    सही
    गलत
  • 2
    50
    सही
    गलत
  • 3
    55
    सही
    गलत
  • 4
    35
    सही
    गलत
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उत्तर : 2. "50"
व्याख्या :

Answer: B) 50 Explanation: 15 girls are absent => b = 2(g-15)...... eqn...(1) 45 boys are absent => g - 15 = 5(b-45).....eqn...(2) => g = 5(b-45) + 15 => b = 2((5(b-45)+15)-15) => b = 2(5b - 225 + 15 - 15) => b = 2(5b-225) => b = 10b - 450 => 9b = 450 => b = 50 so from equation(2) g - 15 = 5(b - 45) => g - 15 = 5(50-45) => g - 15 = 5(5) => g = 25 + 15 => g = 40 Therefore, the number of boys = 50 and girls = 40

प्र: If [P @ Q] means [P is wife of Q], [P+Q] means [P is father of Q] and [P - Q] means [P is sister of Q] then in [G+ H - R @ D], how is G related to D ? 1514 0

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    Son-in-law
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  • 2
    Grand father
    सही
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  • 3
    Father-in-law
    सही
    गलत
  • 4
    Brother
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उत्तर : 3. "Father-in-law"
व्याख्या :

Answer: C) Father-in-law Explanation: "G is father in law of D"G+H means G is father of HH is either son or daughter of GH-R means H is sister of RR@D means R is wife of Dso H and R are sistersand daughters of Gso husband of R i.e. D is son in law of Gor G is father in law of D

प्र: A person says that his son is 5 times as old as his daughter and his wife is 5 times older than his son and he is twice the age of his wife . The sum total of all the ages equals the age of the grand mother who celebrated her 81st birthday today. How old was his son? 1983 0

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    50 yrs
    सही
    गलत
  • 2
    25 yrs
    सही
    गलत
  • 3
    72 yrs
    सही
    गलत
  • 4
    40 yrs
    सही
    गलत
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उत्तर : 1. "50 yrs"
व्याख्या :

Answer: A) 50 yrs Explanation: Let the daughter age be 'x'Therefore, Son age = 5x, Mother age = 25x, Person age = 50x. Thus we get, x+5x+25x+50x = 8181x = 81x = 1 Daughter's age = 1, Son's = 5, Mother's = 25, Person's age = 50.

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