CAT Practice Question and Answer

Q: Find the odd one out of the following words ? 1785 0

  • 1
    cruise
    Correct
    Wrong
  • 2
    crusade
    Correct
    Wrong
  • 3
    expedition
    Correct
    Wrong
  • 4
    campaign
    Correct
    Wrong
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Answer : 1. "cruise"
Explanation :

Answer: A) cruise Explanation: Cruise = a sea voyage for pleasure. All other words are related to ‘journey on land, sea with an aim’.

Q: What sugar is found in DNA? 1784 0

  • 1
    Ribose
    Correct
    Wrong
  • 2
    Deoxyribose
    Correct
    Wrong
  • 3
    Pentose
    Correct
    Wrong
  • 4
    Sucrose
    Correct
    Wrong
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Answer : 2. "Deoxyribose"
Explanation :

Answer: B) Deoxyribose Explanation: DNA - Deoxyribonucleic acid is a type of nucleic acid. The sugar contained in it is called Deoxyribose.

Q: 125 over 1000 in Simplest Form? 1784 0

  • 1
    2/9
    Correct
    Wrong
  • 2
    1/8
    Correct
    Wrong
  • 3
    3/8
    Correct
    Wrong
  • 4
    4/7
    Correct
    Wrong
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Answer : 2. "1/8"
Explanation :

Answer: B) 1/8 Explanation: 125 over 1000 in Simplest Form means 1251000 in its simple fraction form.   Now, to get the simplest form of 125/1000, find the HCF or GCD of both numerator and denominator i.e, 125 and 1000.   HCF of 125, 1000 = 125   Then, divide both numerator and denominator by 125 i.e, 1251251000125 = 18   Hence, 18 is the simplest form of 125 over 1000.

Q: The cost price of an article is 54% of the marked price. Calculate the gain percent after allowing a discount of 15%  ? 1784 0

  • 1
    51.32 %
    Correct
    Wrong
  • 2
    49.23 %
    Correct
    Wrong
  • 3
    48.4 %
    Correct
    Wrong
  • 4
    46.8 %
    Correct
    Wrong
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Answer : 3. "48.4 %"
Explanation :

Answer: C) 48.4 % Explanation: Let marked price = Rs. 100. Then, C.P. = RS. 54, S.P. = Rs. 85Gain % = 31/64 x 100 = 48.4%.

Q: Which Country has listed Yoga as a "sports activities"? 1783 1

  • 1
    Saudi Arabia
    Correct
    Wrong
  • 2
    UAE
    Correct
    Wrong
  • 3
    Slovenia
    Correct
    Wrong
  • 4
    Pakistan
    Correct
    Wrong
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Answer : 1. "Saudi Arabia"
Explanation :

Answer: A) Saudi Arabia Explanation:

Q: P alone can do a piece of work in 24 days. The time taken by P to complete one-third of work is equal to time taken by Q to complete half of the work. How many days are required to complete by P and Q working together ? 1783 0

  • 1
    9 3/5 days
    Correct
    Wrong
  • 2
    7 days
    Correct
    Wrong
  • 3
    6 3/7 days
    Correct
    Wrong
  • 4
    8 days
    Correct
    Wrong
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Answer : 1. "9 3/5 days"
Explanation :

Answer: A) 9 3/5 days Explanation: Let the total work be 'W' As per the given information, P can complete the work 'W' in 24 days. => one day work of P = W/24 And also given that, The time taken by P to complete one-third of work is equal to time taken by Q to complete half of the work => PW/3 = QW/2 => P's 1 day =    W/24    ?    =      W/3 =>  ?  = 24W/3W  = 8 => QW/2 = 8 days => Q alone can complete the work W in 16 days => P + Q can complete the work in 1/24 + 1/16 = 5/48 => 48/5 days = 9 3/5 days.

Q: What is conversion operator ? 1782 0

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Answer :
Explanation :

Class can have a public method for specific data type conversions.for example:class B{double value;public  B(int i )operator double(){return value;}};B BObject;double i = BObject; // assigning object to variable i of type double.now conversion operator gets called to assign the value.

Q: Find the sum of the Arithmetic Series upto 36 terms 2, 5, 8, 11,... 1782 1

  • 1
    3924
    Correct
    Wrong
  • 2
    1962
    Correct
    Wrong
  • 3
    1684
    Correct
    Wrong
  • 4
    1452
    Correct
    Wrong
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Answer : 2. "1962"
Explanation :

Answer: B) 1962 Explanation: Arithmetic Series ::   An Arithmetic Series is a series of numbers in which each term increases by a constant amount.   How to find the sum of the Arithmetic Sequence or Series for the given Series ::   When the series contains a large amount of numbers, its impractical to add manually. You can quickly find the sum of any arithmetic sequence by multiplying the average of the first and last term by the number of terms in the sequence.   That is given by Sn = n(a1 + an)2 Where n = number of terms, a1 = first term, an = last term   Here Last term is given by an = a1 + n-1d where d = common difference   Now given Arithmetic Series is    2, 5, 8, 11,...   Here a1 = 2,  d = 3, n = 36    Now, an= a1 + n - 1d a36= 2 + 36 - 13 = 105 + 2 = 107    Now, Sum to 36 terms is given by   S36 = 36(2 + 107)2 = 36 x 1092 = 39242 = 1962       Therefore, Sum to 36 terms of the series 2, 5, 8, 11,... is 1962.

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