Maths Practice Question and Answer

Q:

Two numbers are in the ratio 3: 4. If their LCM is 240, the E smaller of the two numbers is: 

1631 1

  • 1
    100
    Correct
    Wrong
  • 2
    80
    Correct
    Wrong
  • 3
    60
    Correct
    Wrong
  • 4
    50
    Correct
    Wrong
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Answer : 3. "60 "

Q:

A alone can complete a work in 15 days and B alone can complete a work in 25 days. If they work on alternate days starting with A, in how many days the work will be finished?

1631 0

  • 1
    16 days
    Correct
    Wrong
  • 2
    22 days
    Correct
    Wrong
  • 3
    $$17{1\over 2} $$ days
    Correct
    Wrong
  • 4
    $$18{3\over 5} $$ days
    Correct
    Wrong
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Answer : 4. "$$18{3\over 5} $$ days"

Q:

Of the three numbers, the second is twice the first and it is also thrice the third. If the average of three numbers is 44, the difference of the first number and the third numbers is: 

1631 0

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

Q:

If 1 + sin2 A = 3 sin A cos A, then what are the possible values of tan A?

1631 0

  • 1
    1, 0
    Correct
    Wrong
  • 2
    1, 1/2
    Correct
    Wrong
  • 3
    1 , 1/3
    Correct
    Wrong
  • 4
    1, 3
    Correct
    Wrong
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Answer : 2. "1, 1/2"

Q:

Find the coordinates of the midpoint of the line joining the points (10,12) and (0,8).

1631 0

  • 1
    (5, 10)
    Correct
    Wrong
  • 2
    (12, 6)
    Correct
    Wrong
  • 3
    (4,5)
    Correct
    Wrong
  • 4
    (3,5)
    Correct
    Wrong
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Answer : 1. "(5, 10)"

Q:

In triangle ABC a straight line parallel to BC intersects AB and AC at D and E respectively. If AB = 2AD then DE : BC is

1631 0

  • 1
    2 : 3
    Correct
    Wrong
  • 2
    2 : 1
    Correct
    Wrong
  • 3
    1 : 2
    Correct
    Wrong
  • 4
    1 : 3
    Correct
    Wrong
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Answer : 3. "1 : 2"

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Answer : 5. "E"

Q:

Find the square root of  $$ {k+l+m+n+2\sqrt{ml+mk}+2\sqrt{mn}+2\sqrt{kn+ln}}$$

1631 0

  • 1
    $${\sqrt{k+l}}+\sqrt{m+n}$$
    Correct
    Wrong
  • 2
    $${\sqrt{k+n}}+\sqrt{m-n}$$
    Correct
    Wrong
  • 3
    $${\sqrt{k+l}}+\sqrt{m}+\sqrt{n}$$
    Correct
    Wrong
  • 4
    $${\sqrt{k+m}}+\sqrt{l+n}$$
    Correct
    Wrong
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Answer : 1. "$${\sqrt{k+l}}+\sqrt{m+n}$$"

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