Maths Practice Question and Answer

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Answer : 1. "85 "

Q:

On a certain Principal if the Simple interest for two years is Rs 4800 and Compound interest for the two years is Rs 5088, what is the rate of Interest?

1190 0

  • 1
    12 percent
    Correct
    Wrong
  • 2
    18 percent
    Correct
    Wrong
  • 3
    6 percent
    Correct
    Wrong
  • 4
    24 percent
    Correct
    Wrong
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Answer : 1. "12 percent"

Q:

The LCM of four consecutive numbers is 60 The sum of the first two numbers is equal to the fourth number. What is the sum of four numbers? 

1190 0

  • 1
    17
    Correct
    Wrong
  • 2
    14
    Correct
    Wrong
  • 3
    21
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 2. "14"

Q:

A certain sum, invested at 4% per annum compound interest, compounded half yearly, amounts to Rs. 7,803 at the end of one year. The sum is: 

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  • 1
    Rs. 7,000
    Correct
    Wrong
  • 2
    Rs. 7,200
    Correct
    Wrong
  • 3
    Rs. 7,500
    Correct
    Wrong
  • 4
    Rs. 7,700
    Correct
    Wrong
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Answer : 3. "Rs. 7,500"

Q:

A metallic solid spherical ball of radius 3 cm is melted and recast into three spherical balls. The radii of two of these balls are 2 cm and 1.5 cm. What is the surface area (in cm2) of the third ball?

1189 0

  • 1
    50 π
    Correct
    Wrong
  • 2
    $${25\over 4}π$$
    Correct
    Wrong
  • 3
    $$25 π$$
    Correct
    Wrong
  • 4
    $${25\over 2}π$$
    Correct
    Wrong
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Answer : 3. "$$25 π$$"

Q:

If m = – 4, n = – 2, then the value of m3 – 3m2 + 3m + 3n + 3n2 + n3 is

1189 0

  • 1
    – 126
    Correct
    Wrong
  • 2
    124
    Correct
    Wrong
  • 3
    – 124
    Correct
    Wrong
  • 4
    126
    Correct
    Wrong
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Answer : 1. "– 126 "

Q:

The average of twenty-five numbers is 54. The average of the first 13 numbers and that of the last 13 numbers is 52.8 and 62.2, respectively. If the 13th number is excluded, then what is the average of the remaining numbers (correct to one decimal place)?

1189 0

  • 1
    50.6
    Correct
    Wrong
  • 2
    49.8
    Correct
    Wrong
  • 3
    51.2
    Correct
    Wrong
  • 4
    50.2
    Correct
    Wrong
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Answer : 4. "50.2"

Q:

If x = 222, y = 223 and z = 224, then find the value of x3+y3+z3-3xyz

1189 0

  • 1
    2007
    Correct
    Wrong
  • 2
    2005
    Correct
    Wrong
  • 3
    2006
    Correct
    Wrong
  • 4
    2004
    Correct
    Wrong
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Answer : 1. "2007 "

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