IIT JEE Practice Question and Answer

Q: Find the Odd One Out? 3 24 186 1008 5040 20160 2153 0

  • 1
    24
    Correct
    Wrong
  • 2
    20160
    Correct
    Wrong
  • 3
    186
    Correct
    Wrong
  • 4
    5040
    Correct
    Wrong
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Answer : 3. "186"
Explanation :

Answer: C) 186 Explanation: The given number series is 3  24  186  1008  5040  20160 Here  the given series follows a pattern that, 3 3 x 8 = 24 24 x 7 = 168 not 186 168 x 6 = 1008 1008 x 5 =  5040 5040 x 4 = 20160   Hence the Odd One in the number series is 186.

Q: 90 D in a R A 2153 0

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Answer :
Explanation :

90 D in a R A => 90 degrees in a Right Angle.  This is similar to  26 L of the A = 26 Letters of the Alphabet 12 S of the Z.

Q: You can See, Smell and Taste microorganisms. 2150 0

  • 1
    TRUE
    Correct
    Wrong
  • 2
    FALSE
    Correct
    Wrong
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Answer : 2. "FALSE"
Explanation :

Answer: B) FALSE Explanation: You cannot see a microorganisms without using a Microscope. You also cannot taste or smell microorganisms such as bacteria in contaminated food.

Q: The sum of three consecutive odd numbers is 93. What is the middle number? 2150 0

  • 1
    31
    Correct
    Wrong
  • 2
    33
    Correct
    Wrong
  • 3
    29
    Correct
    Wrong
  • 4
    27
    Correct
    Wrong
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Answer : 1. "31"
Explanation :

Answer: A) 31 Explanation: Let the three consecutive odd numbers be x, x+2, x+4 Then, x + x + 2 + x + 4 = 93 => 3x + 6 = 93 => 3x = 87 => x = 29 => 29, 31, 33 are three consecutive odd numbers.   Therefore, the middle number is 31.

Q: Dot cabs company provides cabs for software employees. The company has 8 Swift dzires, 6 Scorpios, 7 Innovas and few small cars. If Swift dzire makes one fourth of the total fleet, how many small cars are there in the company ? 2149 0

  • 1
    9
    Correct
    Wrong
  • 2
    10
    Correct
    Wrong
  • 3
    11
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
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Answer : 3. "11"
Explanation :

Answer: C) 11 Explanation: Given the company has 8 SD + 6 SRP + 7 IN = 21 cars + 'x' small cars.Given SD makes 1/4 th of the total fleet.=> 8 = 1/4 (21 + x)=> 32 = 21 + x=> x = 11 Therefore, the company has 11 small cars.

Q: 'BE' is related to 'GJ' in the same way as 'PS' is related to ? 2149 0

  • 1
    VX
    Correct
    Wrong
  • 2
    TU
    Correct
    Wrong
  • 3
    UX
    Correct
    Wrong
  • 4
    TV
    Correct
    Wrong
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Answer : 3. "UX"
Explanation :

Answer: C) UX Explanation: Each corresponding letter moves five places forward in the alphabet.Here as BE is related to GJ then PS will relate to UX.

Q: CK169JROS2419TXKM??PV 2148 0

  • 1
    14,21
    Correct
    Wrong
  • 2
    21,14
    Correct
    Wrong
  • 3
    56,84
    Correct
    Wrong
  • 4
    84,56
    Correct
    Wrong
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Answer : 2. "21,14"
Explanation :

Answer: B) 21,14 Explanation: Putting A=1, B=2, C=3,..., M=13,....,X=24,Y=25, Z=26, we have :        JR = J + R2 + 2 = 10 + 18 2 + 2 = 16       CK = C + K2 + 2 =  3 + 112 + 2 = 9       TX = T + X2+ 2 = 20 + 242 + 2 = 24       OS = O + S2 + 2 = 15 + 192 + 2 = 19        So, the missing numbers are :       21 and 14       Hence, the answer is (b).

Q: Which of the following is not a pure substance? 2147 0

  • 1
    Oxygen
    Correct
    Wrong
  • 2
    Carbon dioxide
    Correct
    Wrong
  • 3
    Water
    Correct
    Wrong
  • 4
    Milk
    Correct
    Wrong
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Answer : 4. "Milk"
Explanation :

Answer: D) Milk Explanation: Milk is not a pure substance since it has so many constituents that can be separated physically. Compounds are pure substances formed from elements unlike mixtures.

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