Maths Practice Question and Answer

Q:

The length of the diagonal of a square is ‘a’ cm. Which of the following represents the area of the square (in sq. cm.)?

665 0

  • 1
    2a
    Correct
    Wrong
  • 2
    $${a\over\sqrt { 2}\ }$$
    Correct
    Wrong
  • 3
    $${a^2\over 2} $$
    Correct
    Wrong
  • 4
    $${a^2\over 4} $$
    Correct
    Wrong
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Answer : 3. "$${a^2\over 2} $$"

Q:

The length of the perpendiculars drawn from any point in the interior of an equilateral triangle to the respective sides are p1 , p2 and p3 . The length of each side of the triangle is

665 0

  • 1
    $${2\over \sqrt { 3}}+(p_1+p_2+p_3) $$
    Correct
    Wrong
  • 2
    $${1\over \sqrt { 3}}+(p_1+p_2+p_3) $$
    Correct
    Wrong
  • 3
    $${1\over \sqrt { 3}}+(p_1+p_2+p_3) $$
    Correct
    Wrong
  • 4
    $${4\over \sqrt { 3}}+(p_1+p_2+p_3) $$
    Correct
    Wrong
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Answer : 1. "$${2\over \sqrt { 3}}+(p_1+p_2+p_3) $$ "

Q:

If x = 332, y = 333, z = 335, then the value of x3 + y3 + z3 – 3xyz is

665 0

  • 1
    10000
    Correct
    Wrong
  • 2
    7000
    Correct
    Wrong
  • 3
    8000
    Correct
    Wrong
  • 4
    9000
    Correct
    Wrong
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Answer : 2. "7000 "

Q:

The curved surface area of a cylinder is five times the area of its base. Find the ratio of radius and height of the cylinder.

665 0

  • 1
    2:3
    Correct
    Wrong
  • 2
    3:5
    Correct
    Wrong
  • 3
    2:5
    Correct
    Wrong
  • 4
    3:4
    Correct
    Wrong
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Answer : 3. "2:5"

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Answer : 4. "244"

Q:

If $$A={{2^7×3^7}}$$, $$B={{2^7×3^5}}$$ and $$C={{2^8×3^4}}$$, then what is the least common multiple of A, B and C?

664 0

  • 1
    $${{2^7×3^7}}$$
    Correct
    Wrong
  • 2
    $${{2^6×3^7}}$$
    Correct
    Wrong
  • 3
    $${{2^8×3^7}}$$
    Correct
    Wrong
  • 4
    $${{2^9×3^7}}$$
    Correct
    Wrong
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Answer : 3. "$${{2^8×3^7}}$$"

Q:

If   $$x+{1\over x}=2 $$ then the value of    $$x^{12}-{1\over x^{12}} $$ is

664 0

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

Q:

Find the area of the triangle whose sides are 5 cm, 12 cm and 13 cm.

664 0

  • 1
    30 $${{cm^2}}$$
    Correct
    Wrong
  • 2
    33 $${{cm^2}}$$
    Correct
    Wrong
  • 3
    15 $${{cm^2}}$$
    Correct
    Wrong
  • 4
    25 $${{cm^2}}$$
    Correct
    Wrong
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Answer : 1. "30 $${{cm^2}}$$"

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