Maths Practice Question and Answer

Q:

If x = – 1, then the value of   $$ {1\over x^{99}}+{1\over x^{98}}+{1\over x^{97}}+{1\over x^{96}}+{1\over x^{95}}+{1\over x^{94}}+x $$ is

785 0

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

Q:

Directions: In the following question, two equations are given in variables X and Y. You have to solve these equations and determine the relation between X and Y.

I. X2 – 5x + 6 = 0
 II. Y2 – y – 6 = 0

785 0

  • 1
    X > Y
    Correct
    Wrong
  • 2
    X < Y
    Correct
    Wrong
  • 3
    X ≥ Y
    Correct
    Wrong
  • 4
    X ≤ Y
    Correct
    Wrong
  • 5
    X = Y or no relation can be established
    Correct
    Wrong
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Answer : 5. "X = Y or no relation can be established"

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Answer : 1. "48 : 41 "

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Answer : 3. "25% "

Q:

A prism with a right triangular base is 25 cm high. If the shorter sides of the triangle are in the ratio of 1 : 2 and the volume of the prism is 100 cm3 , what is the length of the longest side of the triangle?

782 0

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

Q:

If sin 3A=cos(A+100), where 3A is an acute angel, then what is the value of $$2cosec{3A\over2}+6sin^23A-{3\over 2}tan^2\ 3A$$?

780 0

  • 1
    4
    Correct
    Wrong
  • 2
    $$7\over 4$$
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    $$17\over 2$$
    Correct
    Wrong
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Answer : 1. "4"

Q:

The perimeters of ΔABC and ΔDEF are 43.2 cm and 28.8 cm, respectively, and ΔABC ~ ΔDEF. If DE = 12 cm, then the length of AB is:

779 0

  • 1
    18.4 cm
    Correct
    Wrong
  • 2
    20 cm
    Correct
    Wrong
  • 3
    18 cm
    Correct
    Wrong
  • 4
    20.4 cm
    Correct
    Wrong
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Answer : 3. "18 cm"

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