IIT JEE Practice Question and Answer

Q: 1 4 27 _  3125 46656 Find the missing number in the given series? 2068 0

  • 1
    125
    Correct
    Wrong
  • 2
    625
    Correct
    Wrong
  • 3
    404
    Correct
    Wrong
  • 4
    256
    Correct
    Wrong
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Answer : 4. "256"
Explanation :

Answer: D) 256 Explanation: It follows the rule that   1 2x2  3x3x3  4x4x4x4   5x5x5x5x5  ...   So the missing number is 4x4x4x4 = 256.

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Answer : 3. "Both a & b follows"
Explanation :

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.

Q: Only movable bone in the skull 2066 0

  • 1
    Occipital bone
    Correct
    Wrong
  • 2
    Frontal bone
    Correct
    Wrong
  • 3
    Mandible
    Correct
    Wrong
  • 4
    Temporal bone
    Correct
    Wrong
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Answer : 3. "Mandible"
Explanation :

Answer: C) Mandible Explanation: The skul contains the bones like Occipital bone, Frontal bone, Mandible, Temporal bone, Parietal bone. The mandible, or jaw bone, is the only movable bone of the skull, forming the temporomandibular joint with the temporal bone. The lower teeth are rooted into the mandible while the upper teeth are rooted in the two maxillae.

Q: Which is the best definition of Federalism? 2066 0

  • 1
    Federalism encourages the practice of direct democracy at the state level rather than the national level.
    Correct
    Wrong
  • 2
    The quality of federal supremacy in government.
    Correct
    Wrong
  • 3
    A happy combination of mixed government.
    Correct
    Wrong
  • 4
    Federalism enables the state and the national government to share power.
    Correct
    Wrong
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Answer : 4. "Federalism enables the state and the national government to share power."
Explanation :

Answer: D) Federalism enables the state and the national government to share power. Explanation: Federalism :: Federalism is a system based upon democratic rules and institutions in which the power to govern is shared between national and provincial/state governments, creating what is often called a federation.   Federalism is a political concept in which a group of members are bound together with a governing representative head.  Federalism enables the state and the national government to share power.

Q: Which value is equal to 5% of 1,500? 2065 0

  • 1
    35
    Correct
    Wrong
  • 2
    55
    Correct
    Wrong
  • 3
    75
    Correct
    Wrong
  • 4
    45
    Correct
    Wrong
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Answer : 3. "75"
Explanation :

Answer: C) 75 Explanation: In the question it is asked for 5% of 1500 5 x 1500/100 = 15 x 5 = 75.   Hence, 5% of 1,500 is equal to 75.

Q: Solve the Puzzle? 2063 0

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Answer :
Explanation :

From the assumption and trial and error method, last three digits sum must leave the same digit as the answer. It is possible only if the answer must be units digit number leaving tens digit as carry. And the possible 3rd digit is 5. Since 5 + 5 + 5 = 15  Now, 2nd step is  1 + x + x + x = 5 => 3x = 4 It is possible with x = 8. 8 + 8 + 8 + 1 = 25 leaving 2 as carry.  Now, 3rd step is 2 + x + x + x = 5 => x = 1   Hence, the three dgits are 1, 8, 5. 185 + 185 + 185 = 555.

Q: Find the odd man out in the following number series? 71, 88, 113, 150, 203, 277 2061 0

  • 1
    277
    Correct
    Wrong
  • 2
    203
    Correct
    Wrong
  • 3
    150
    Correct
    Wrong
  • 4
    113
    Correct
    Wrong
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Answer : 1. "277"
Explanation :

Answer: A) 277 Explanation: The given number series is    71      88       113       150       203          277    +17    +25       +37      +53        +74         +8      +12        +16       +21             +4          +4         +5   The series should be  71  88  112   150    203   276 i.e, the differences of the difference should be +4.   Hence, the odd man in the given series is 277.

Q: Two numbers are respectively 40% and 30% more than a third number. The second number expressed in terms of percentage of the first is ? 2060 0

  • 1
    92.8%
    Correct
    Wrong
  • 2
    84.23%
    Correct
    Wrong
  • 3
    87.14%
    Correct
    Wrong
  • 4
    94.1%
    Correct
    Wrong
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Answer : 1. "92.8%"
Explanation :

Answer: A) 92.8% Explanation: Here, x = 40 and y = 30;Therefore second number= [[100+y100+x] x 100 ]% of first number= [[100+y100+x] x 100 ]% of first numberSecond number = 92.8% of the first number.

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