Maths Practice Question and Answer

Q:

30 dozen walnuts were purchased for Rs. 14400 and 32 packets of walnuts (20 walnuts in each packet) were purchased for Rs. 57600. If a packet of Akharato was sold for five rupees in a pack at Rs. 432, what would be the profit percentage?

2463 0

  • 1
    10 %
    Correct
    Wrong
  • 2
    25 %
    Correct
    Wrong
  • 3
    20 %
    Correct
    Wrong
  • 4
    15 %
    Correct
    Wrong
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Answer : 3. "20 % "

Q:

Find the coordinates of the points where the graph 57x-19y=399 cuts the coordinate axes.

2462 0

  • 1
    x-axis at(-7,0) and y-axis at (0,-21)
    Correct
    Wrong
  • 2
    x-axis at(-7,0) and y-axis at (0,21)
    Correct
    Wrong
  • 3
    x-axis at (7,0) and y-axis at (0,-21)
    Correct
    Wrong
  • 4
    x-axis at (7,0) and y-axis at (0,21)
    Correct
    Wrong
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Answer : 3. "x-axis at (7,0) and y-axis at (0,-21)"

Q:

Directions : What will come in the place of the question mark (?) in the following number series?

? , 8, 14, 34, 76, 148

2461 0

  • 1
    None of these
    Correct
    Wrong
  • 2
    12
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    16
    Correct
    Wrong
  • 5
    8
    Correct
    Wrong
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Answer : 5. "8"

Q:

What is the least number of square tiles required to pave the floor of a room 15 m ,17cm long and 9 m, 2 broad ?

2461 0

  • 1
    840
    Correct
    Wrong
  • 2
    841
    Correct
    Wrong
  • 3
    820
    Correct
    Wrong
  • 4
    814
    Correct
    Wrong
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Answer : 4. "814"

Q: If radius and height of a cylinder increase by 20% and15% respectively. then what is the % change in curved surface area? 2460 0

  • 1
    41%
    Correct
    Wrong
  • 2
    38%
    Correct
    Wrong
  • 3
    33%
    Correct
    Wrong
  • 4
    44%
    Correct
    Wrong
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Answer : 2. "38%"
Explanation :

Answer: B) 38% Explanation: % Change in Curved Surface Area is given by  %Change in radius + %Change in height + %Change in radius × %Change in height 100   ⇒+20 + 15 + 20×15100 = 38%

Q:

The average age of three boys is 18 years and their age ratio is 2: 3: 4, then what is the age of the youngest boy?

2458 0

  • 1
    6 year
    Correct
    Wrong
  • 2
    12 year
    Correct
    Wrong
  • 3
    15 year
    Correct
    Wrong
  • 4
    20 Year
    Correct
    Wrong
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Answer : 2. "12 year"

Q:

The Product of three consecutive number is 4080. What is the least number?

2458 1

  • 1
    17
    Correct
    Wrong
  • 2
    14
    Correct
    Wrong
  • 3
    13
    Correct
    Wrong
  • 4
    16
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
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Answer : 5. "None of these "

Q:

In a exam, a student scores four marks for every correct answer and loses one mark for every wrong answer. If Rahul attempts all sixty questions and secures 130 marks, the no of questions Rahul attempted correctly is :

2456 0

  • 1
    40
    Correct
    Wrong
  • 2
    32
    Correct
    Wrong
  • 3
    38
    Correct
    Wrong
  • 4
    34
    Correct
    Wrong
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Answer : 3. "38"

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