CAT Practice Question and Answer

Q: What approximate value will come in place of question mark (?) in the following question ?  (49.001)2  = ? 1712 0

  • 1
    2500
    Correct
    Wrong
  • 2
    2400
    Correct
    Wrong
  • 3
    2600
    Correct
    Wrong
  • 4
    2300
    Correct
    Wrong
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Answer : 2. "2400"
Explanation :

Answer: B) 2400 Explanation: Given (49.001)2  = ? => =~ 49 x 49 =~ 2401 =~ 2400

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Answer : 1. "cough fight sough acts cats idea more"
Explanation :

Answer: A) cough fight sough acts cats idea more Explanation: Carefully obsrving the given arrangement, we find the following pattern:We observe that,first all the words with the highest number of letters are arranged in the alphabetical order, followed by the words with the second highest number of letters and so on.However, the position of only one word is altered at each step.Input: more fight cats cough sough acts ideaStep1: cough more fight cats sough acts ideaStep2: cough fight more cats sough acts ideaStep3: cough fight sough more cats acts ideaStep4: cough fight sough acts more cats ideaStep5: cough fight sough acts cats more ideaStep6: cough fight sough acts cats idea more   Hence, the answer is A

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Answer :
Explanation :

The letter 'E'. As of the above given data, It is in the 1st place in Earth, 2nd in Heaven and in the middle of the Sea. It appears once in a Year and twice in a Week. It is present in February, June, September, October, November & December. But not in the Month.   Hence, it is the letter 'E'.

Q: The shorter i am, the bigger i am. What am I? 1711 0

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Answer :
Explanation :

A Temper.

Q: 92613 x 62742241 = ? + 89 Find the value of '?' 1711 0

  • 1
    166251
    Correct
    Wrong
  • 2
    166259
    Correct
    Wrong
  • 3
    166252
    Correct
    Wrong
  • 4
    166253
    Correct
    Wrong
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Answer : 3. "166252"
Explanation :

Answer: C) 166252 Explanation: Given 92613 x 62742241 = ? + 89   Using unit digit method,   On LHS,   1 x 1 x 1 = 1   sqrt of last digit 1 => it must end with either 9 or 1   so now   1 x 1 = 1   1 x 9 = 9   On RHS,   ? + 89   => ? = ...1 - 89 = last digit is 11- 9 = 2   or   => ? = ...9 - 89 = last digit is 9 - 9 = 0   Here in the options last digit 2 is option C.

Q: Two persons K and L can complete a piece of work in 30 days and 45 days respectively. If they work together, what part of the work will be completed in 3 days ? 1711 0

  • 1
    1/6
    Correct
    Wrong
  • 2
    1/3
    Correct
    Wrong
  • 3
    2/3
    Correct
    Wrong
  • 4
    1/18
    Correct
    Wrong
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Answer : 1. "1/6"
Explanation :

Answer: A) 1/6 Explanation: K's one day's work = 1/30 L's one day's work = 1/45 (K + L)'s one day's work = 1/30 + 1/45 = 1/18 The part of the work completed in 3 days = 3 (1/18) = 1/6.

Q: What is the gram formula mass of K2CO3? 1710 0

  • 1
    147
    Correct
    Wrong
  • 2
    138
    Correct
    Wrong
  • 3
    129
    Correct
    Wrong
  • 4
    116
    Correct
    Wrong
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Answer : 2. "138"
Explanation :

Answer: B) 138 Explanation: The gram formula mass of a compound is nothing but the molar mass. The molar mass of K2CO3 (Potassium Carbonate) is given by Atomic weights of individual elements are   K (Potassium) = 39 g C (Carbon) = 12 g O (Oxygen) = 16 g   Hence, that of K2CO3 = 39(2) + 12 + 16(3) = 78 + 12 + 48 = 138.

Q: A wholesale dealer allows a discount of 20 % on the marked price to the retailer. The retailer sells at 5% below the marked price. If the customer pays Rs.19 for an article, what profit is made by the retailer on it ? 1710 0

  • 1
    Rs. 4
    Correct
    Wrong
  • 2
    Rs. 3
    Correct
    Wrong
  • 3
    Rs. 5
    Correct
    Wrong
  • 4
    Rs. 1
    Correct
    Wrong
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Answer : 2. "Rs. 3"
Explanation :

Answer: B) Rs. 3 Explanation: Let wholesaler dealers marked price = 100%, Retailer's C.P = 80% And the retailer sells at 5% less than the marked price => S.P = 95%If S.P of 95% of the retailer costs Rs.19 to customer,so its C.P of 80% will cost 80 x 19/95 = 16 Profit made by the retailer = 19-16 =  Rs.3

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