Practice Question and Answer

Q:

In a school, if there are 36% boys and 352 girls, then the number of boys is ________.

981 0

  • 1
    204
    Correct
    Wrong
  • 2
    198
    Correct
    Wrong
  • 3
    244
    Correct
    Wrong
  • 4
    156
    Correct
    Wrong
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Answer : 2. "198"

Q:

The series given below contains a sequence of numbers. Ident ifythe incorrect combination.
2, 15, 41, 80, 134

1132 0

  • 1
    41
    Correct
    Wrong
  • 2
    134
    Correct
    Wrong
  • 3
    80
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 2. "134"

Q:

For any real value of $${\sqrt {secθ-1}\over \sqrt {secθ+1} }=?$$

811 0

  • 1
    cotθ-cosecθ
    Correct
    Wrong
  • 2
    secθ-tanθ
    Correct
    Wrong
  • 3
    cosecθ-cotθ
    Correct
    Wrong
  • 4
    tanθ-secθ
    Correct
    Wrong
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Answer : 3. "cosecθ-cotθ"

Q:

If 2sinθ+cosθ= $${7\over3}$$ then the value of (tan2θ-sec2θ) is

934 0

  • 1
    0
    Correct
    Wrong
  • 2
    -1
    Correct
    Wrong
  • 3
    $${3\over7}$$
    Correct
    Wrong
  • 4
    $${7\over3}$$
    Correct
    Wrong
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Answer : 2. "-1"

Q:

The height and the radius of the base of a right circular cone are 12 cm and 6 cm respectively. The radius of the circular cross-section of the cone cut by a plane parallel to its base at a distance of 3 cm from the base is

904 0

  • 1
    4 cm
    Correct
    Wrong
  • 2
    5.5 cm
    Correct
    Wrong
  • 3
    4.5 cm
    Correct
    Wrong
  • 4
    3.5 cm
    Correct
    Wrong
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Answer : 3. "4.5 cm"

Q:

If S denotes the area of the curved surface of a right circular cone of height h and semi vertical angle ∝ then S equals

1004 0

  • 1
    $$πh^2 tan^2∝ $$
    Correct
    Wrong
  • 2
    $${1\over 3}πh^2tan^2∝$$
    Correct
    Wrong
  • 3
    $$πh^2sec∝tan∝$$
    Correct
    Wrong
  • 4
    $${1\over 3}πh^2sec∝tan∝$$
    Correct
    Wrong
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Answer : 3. "$$πh^2sec∝tan∝$$"

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