IIT JEE Practice Question and Answer

Q: Ratio of the ages of Mahesh and Nilesh is 5 : x. Mahesh is 18 years younger to Ramesh. After nine years Ramesh will be 47 years old. If the difference between the ages of Mahesh and Nilesh is same as the age of Ramesh, what is the value of x ? 3081 0

  • 1
    11.8
    Correct
    Wrong
  • 2
    12.9
    Correct
    Wrong
  • 3
    13.7
    Correct
    Wrong
  • 4
    14.5
    Correct
    Wrong
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Answer : 4. "14.5"
Explanation :

Answer: D) 14.5 Explanation: Let the present ages of Mahesh, Nilesh and Ramesh be k, l and m respectively.k/l = 5/x ------ (1)k = m - 18 ------ (2)m + 9 = 47 ------ (3)k - l = m ----- (4)(3) => m = 47 - 9 = 38 years(2) => k = 38 -18 = 20 years(1) => 20/l = 5/x => l = 4x(4) => 4x - 20 = 38=> 4x = 58 => x = 14.5

Q: The accounting software Tally was developed by 3081 0

  • 1
    Wipro
    Correct
    Wrong
  • 2
    TCS
    Correct
    Wrong
  • 3
    HCL
    Correct
    Wrong
  • 4
    Infosys
    Correct
    Wrong
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Answer : 2. "TCS"
Explanation :

Answer: B) TCS Explanation: Tally is one of the best business accounting software for accounting, inventory, payroll. It is economical and one of the most popular ERP software solutions available in the industry. Tally, an accounting software was developed by the multinational company TCS - Tata Consultancy Services.

Q: Antibiotics are mostly obtained from 3078 1

  • 1
    Viruses
    Correct
    Wrong
  • 2
    Fungi
    Correct
    Wrong
  • 3
    Bacteria
    Correct
    Wrong
  • 4
    Angiosperms
    Correct
    Wrong
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Answer : 2. "Fungi"
Explanation :

Answer: B) Fungi Explanation:

Q: A batsman scores 26 runs and increases his average from 14 to 15. Find the runs to be made if he wants top increasing the average to 19 in the same match ? 3074 0

  • 1
    74
    Correct
    Wrong
  • 2
    79
    Correct
    Wrong
  • 3
    72
    Correct
    Wrong
  • 4
    60
    Correct
    Wrong
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Answer : 1. "74"
Explanation :

Answer: A) 74 Explanation: Number of runs scored more to increse the ratio by 1 is 26 - 14 = 12To raise the average by one (from 14 to 15), he scored 12 more than the existing average.Therefore, to raise the average by five (from 14 to 19), he should score 12 x 5 = 60 more than the existing average. Thus he should score 14 + 60 = 74.

Q: How many 7 digit numbers can be formed using the digits 1, 2, 0, 2, 4, 2, 4? 3071 0

  • 1
    120
    Correct
    Wrong
  • 2
    360
    Correct
    Wrong
  • 3
    240
    Correct
    Wrong
  • 4
    424
    Correct
    Wrong
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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: Rs. 2600 is divided into three parts A, B and C. How much A is more than C if their ratio is 1/2:1/3:1/4 ? 3068 0

  • 1
    600
    Correct
    Wrong
  • 2
    300
    Correct
    Wrong
  • 3
    150
    Correct
    Wrong
  • 4
    75
    Correct
    Wrong
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Answer : 1. "600"
Explanation :

Answer: A) 600 Explanation: 1/2:1/3:1/4 = 6:4:3 As the difference is 3 => 3/13x2600 = 600

Q: Dhanraj Pillay is related to which sports ? 3067 0

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    Cricket
    Correct
    Wrong
  • 2
    Hockey
    Correct
    Wrong
  • 3
    Golf
    Correct
    Wrong
  • 4
    Football
    Correct
    Wrong
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Answer : 2. "Hockey"
Explanation :

Answer: B) Hockey Explanation: Dhanraj Pillay is a retired Indian field hockey player and former captain of the Indian national team.He currently serves as the manager of the team.

Q: Find the odd man out in the following number series? 5, 4, 9, 32, 273 3065 0

  • 1
    4
    Correct
    Wrong
  • 2
    9
    Correct
    Wrong
  • 3
    32
    Correct
    Wrong
  • 4
    273
    Correct
    Wrong
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Answer : 3. "32"
Explanation :

Answer: C) 32 Explanation: The given number series follows 5, 4, 9, 32, 308 pattern that   5 5 x 1 - 1 = 4 4 x 3 - 3 = 9 9 x 5 - 5 = 40 (not equals to 32) 40 x 7 - 7 = 273   Hence, the odd man in the given number series is 32.

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