CAT Practice Question and Answer

Q: Bacteria divide by 2031 0

  • 1
    Binary Fission
    Correct
    Wrong
  • 2
    Spirilla
    Correct
    Wrong
  • 3
    RNA
    Correct
    Wrong
  • 4
    Fusion
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Binary Fission"
Explanation :

Answer: A) Binary Fission Explanation: Bacteria divided and reproduce by Binary fission. In this process, the bacterium, which is a single cell, divides into two identical daughter cells. Binary fission begins when the DNA of the bacterium divides into two replicates.

Q: A sales boy is allowed 412 % discount on the total sales made by him plus a bonus of 14% on the sales over Rs.12,000.If his total earnings were Rs.2400, then his total sales(in Rs.) are ? 2031 0

  • 1
    Rs.60,145.23
    Correct
    Wrong
  • 2
    Rs.54,285.54
    Correct
    Wrong
  • 3
    Rs.52,147.85
    Correct
    Wrong
  • 4
    Rs.50,589.47
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "Rs.50,589.47"
Explanation :

Answer: D) Rs.50,589.47 Explanation: Let the total earnings be Rs.x  Then 412% of x + 14% of (x-12000) =2400  ⇒92×x100+14×x-12000100=2400 =>  x=50,589.47

Q: 1 Billion Seconds Equals to 2031 0

  • 1
    34.76 years
    Correct
    Wrong
  • 2
    32.48 years
    Correct
    Wrong
  • 3
    33.31 years
    Correct
    Wrong
  • 4
    31.68 years
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "31.68 years"
Explanation :

Answer: D) 31.68 years Explanation: We know that 1 year = 365.25 days 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds   => 1 Year = 365.25 x 24 x 60 x 60 Seconds But 1 billion seconds = ? 1 Year = 365.25 x 24 x 60 x 60 Seconds     ?     =  1000000000 Seconds   ? = 1000000000365.25 x 24 x 60 x 60 years = 31. 68 years.

Q: An individual deposited 20% of 25% of 30% of what he had into his account with a bank. If he deposited Rs.750, how much was he having initially with him before depositing ? 2031 0

  • 1
    Rs. 38000
    Correct
    Wrong
  • 2
    Rs. 47000
    Correct
    Wrong
  • 3
    Rs. 50000
    Correct
    Wrong
  • 4
    Rs. 35000
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "Rs. 50000"
Explanation :

Answer: C) Rs. 50000 Explanation: Let 'x' be the amount he had in the bank. => 20/100(25/100(30/100(x))) = 750 x = 750 x 8000/120 = Rs. 50000

Q: Maths Challenge 2030 0

  • 1
    19
    Correct
    Wrong
  • 2
    38
    Correct
    Wrong
  • 3
    22
    Correct
    Wrong
  • 4
    40
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "40"
Explanation :

Answer: D) 40 Explanation: To get a pair of black rings 100 percent certain 27 blue + 17 red + 2 black = 40 rings should be taken out Then only we can get 100 % a pair of black rings.

Q: A bag contains 3 red balls, 5 yellow balls and 7 pink balls. If one ball is drawn at random from the bag, what is the probability that it is either pink or red? 2030 0

  • 1
    2/3
    Correct
    Wrong
  • 2
    1/8
    Correct
    Wrong
  • 3
    3/8
    Correct
    Wrong
  • 4
    3/4
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "2/3"
Explanation :

Answer: A) 2/3 Explanation: Given number of balls = 3 + 5 + 7 = 15 One ball is drawn randomly = 15C1 probability that it is either pink or red = 7C1 + 3C115C1 = 7 + 315 = 1015 = 23

Q: A earns 50% of B's salary, B earns 80% of C's salary. If the total earnings for a month is Rs. 22000, then what is the earning for A ? 2030 0

  • 1
    Rs. 4000
    Correct
    Wrong
  • 2
    Rs. 4200
    Correct
    Wrong
  • 3
    Rs. 4400
    Correct
    Wrong
  • 4
    Rs. 4600
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Rs. 4000"
Explanation :

Answer: A) Rs. 4000 Explanation: Let C's salary be Rs. x Then B's salary = 80x/100 => A's salary = (50/100) * (80x/100) = 40x/100 But given total earnings in a month = 22000 => x + 80x/100 + 40x/100 = 22000 => x + 120x/100 = 22000 => x = 10000 => A's salary = 40 x 10000/100 = Rs. 4000

Q: In a 48 ltr mixture, the ratio of milk and water is 5:3. How much water should be added in the mixture so as the ratio will become 3:5 ? 2029 0

  • 1
    24 lit
    Correct
    Wrong
  • 2
    16 lit
    Correct
    Wrong
  • 3
    32 lit
    Correct
    Wrong
  • 4
    8 lit
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "32 lit"
Explanation :

Answer: C) 32 lit Explanation: Given mixture = 48 lit Milk in it = 48 x 5/8 = 30 lit => Water in it = 48 - 30 = 18 lit Let 'L' lit of water is added to make the ratio as 3:5 => 30/(18+L) = 3/5 => 150 = 54 + 3L => L = 32 lit.

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully