CAT Practice Question and Answer

Q: What is the missing number in 5, 14, 42, 107, 233, ? 2875 0

  • 1
    316
    Correct
    Wrong
  • 2
    384
    Correct
    Wrong
  • 3
    450
    Correct
    Wrong
  • 4
    479
    Correct
    Wrong
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Answer : 3. "450"
Explanation :

Answer: C) 450 Explanation: Given Series is 5, 14, 42, 107, 233, _? 5, 14, 42, 107, 233, _? Differences is 9, 28, 65, 126 9 = 2^3 + 1 28 = 3^3 + 1 65 = 4^3 + 1 126 = 5^3 + 1 Now, next difference must be 6^3 + 1 = 217 Hence, next number in the given series = 233 + 217 = 450.

Q: Which statement best describes Arteries? 2870 0

  • 1
    They have thin walls and transport blood away from the heart
    Correct
    Wrong
  • 2
    They have thick walls and transport blood toward the heart
    Correct
    Wrong
  • 3
    They have thin walls and transport blood toward the heart
    Correct
    Wrong
  • 4
    They have thick walls and transport blood away from the heart
    Correct
    Wrong
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Answer : 4. "They have thick walls and transport blood away from the heart"
Explanation :

Answer: D) They have thick walls and transport blood away from the heart Explanation: Because arteries have to have thick walls for use of protection. Its when you get to veins where the walls get thinner. And the use of the heart is to pump blood to all of the cells and organs in the body so it would be to transport blood away from the heart. i.e.  Arteries = Away from the Heart Veins = Back to the Heart.

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Answer : 1. "48"
Explanation :

Answer: A) 48 Explanation: 3X + 4y = 240by substitute through options 48 is correct

Q: Vishal, Priyatham, Raghu, Karthik and Veeru are five friends. Vishal is twice as old as priyatham. Raghu is half age of Priyatham. Vishal is half the age of Veeru and Raghu is twice the age of Karthik. Question:Who is the youngest ? 2860 0

  • 1
    Veeru
    Correct
    Wrong
  • 2
    Karthik
    Correct
    Wrong
  • 3
    Vishal
    Correct
    Wrong
  • 4
    Raghu
    Correct
    Wrong
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Answer : 2. "Karthik"
Explanation :

Answer: B) Karthik Explanation: Let Priyatham's age = x Then, Vishal's age = 2x; Raghu's age = x/2; Veeru's age = 4x ; Karthik's age = x/4 So, the descending order of ages is : Veeru > Vishal > Priyatham > Raghu > Karthik Therefore,  Karthik is the youngest.

Q: Suppose today is Friday, what day of the week will it be 65 days from now? 2859 0

  • 1
    Saturday
    Correct
    Wrong
  • 2
    Sunday
    Correct
    Wrong
  • 3
    Friday
    Correct
    Wrong
  • 4
    Thursday
    Correct
    Wrong
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Answer : 2. "Sunday"
Explanation :

Answer: B) Sunday Explanation: The day of the week repeats every 7 days. Given today is Friday. Again Friday is repeated on the 7th day, 14th,... on 7 multiple days. Hence, Friday is on the 63rd day, as 63 is multiple of 7.   Now, the required day of the week on the 65th day is Sunday.

Q: K can build a wall in 30 days. L can demolish that wall in 60 days. If K and L work on alternate days, when will the wall be completed ? 2859 1

  • 1
    120 days
    Correct
    Wrong
  • 2
    119 days
    Correct
    Wrong
  • 3
    118 days
    Correct
    Wrong
  • 4
    117 days
    Correct
    Wrong
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Answer : 4. "117 days"
Explanation :

Answer: D) 117 days Explanation: K's work in a day(1st day) = 1/30L's work in a day(2nd day)= -1/60(demolishing)hence in 2 days, combined work= 1/30 - 1/60 =1/60since both works alternatively, K will work in odd days and L will work in even days.1/60 unit work is done in 2 days58/60 unit work will be done in 2 x 58 days = 116 daysRemaining work = 1-58/60 = 1/30Next day, it will be K's turn and K will finish the remaining 1/30 work.hence total days = 116 + 1 = 117.

Q: Excretion is best described as the removal of 2856 0

  • 1
    Undigested material from the digestive tract
    Correct
    Wrong
  • 2
    Metabolic wastes from a cell
    Correct
    Wrong
  • 3
    Toxic wastes by the process of cyclosis
    Correct
    Wrong
  • 4
    Water molecules from dipeptide hydrolysis
    Correct
    Wrong
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Answer : 2. "Metabolic wastes from a cell"
Explanation :

Answer: B) Metabolic wastes from a cell Explanation: Excretion is best described as the removal of Metabolic wastes from a cell.

Q: Find the next number in the series   143 143 136 110 ? 2853 0

  • 1
    91
    Correct
    Wrong
  • 2
    35
    Correct
    Wrong
  • 3
    47
    Correct
    Wrong
  • 4
    69
    Correct
    Wrong
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Answer : 3. "47"
Explanation :

Answer: C) 47 Explanation: The next number in the series is 143 143 136 110       0    7      26 (Differences)  13 - 1 , 23 - 1, 33 - 1, 43 - 1,...Now the next number is given by110 - (43 - 1) = 110 - 63 = 47.

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