Quiz Discussion

The expression \(\frac{1}{{x - 1}} - \frac{1}{{x + 1}} - \frac{2}{{{x^2} + 1}} - \frac{4}{{{x^4} + 1}}\)  is equal to = ?

 

Course Name: Quantitative Aptitude

  • 1]

    \(\frac{8}{{{x^8} + 1}}\)

  • 2]

    \(\frac{8}{{{x^8} - 1}}\)

  • 3]

    \(\frac{8}{{{x^7} - 1}}\)

  • 4]

    \(\frac{8}{{{x^7} + 1}}\)

Solution
No Solution Present Yet

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# Quiz
1
Discuss

If \(x = \sqrt 3 { \text{ + }}\sqrt 2 { \text{,}}   \) then the value of \({x^3} - \frac{1}{{{x^3}}}\)  is?

 

  • 1]

    \(10\sqrt 2 \)

  • 2]

    \(14\sqrt 2\)

  • 3]

    \(22\sqrt 2\)

  • 4]

    \(8\sqrt 2\)

Solution
2
Discuss

If \(\frac{1}{3} + \frac{1}{2} + \frac{1}{x}{ \text{ = 4}}\)     then x = ?

 

  • 1]

    5/16

  • 2]

    6/19

  • 3]

    18/5

  • 4]

    24/11

Solution
3
Discuss

421 ÷ 35 × 299.97 ÷ 25.05 = ?2

  • 1] 22
  • 2] 24
  • 3] 28
  • 4] 12
  • 5] 18
Solution
4
Discuss

\({ \text{If }}x = \frac{1}{{2 + \frac{1}{2}}}{ \text{ then }}\frac{1}{x} = ?\)

 

  • 1]

    2/5

  • 2]

    5/2

  • 3]

    3/5

  • 4]

    1/2

Solution
5
Discuss

If a - b = 3 and a2 + b2 = 29, find the value of ab = ?

  • 1] 10
  • 2] 12
  • 3] 15
  • 4] 18
Solution
6
Discuss

Free notebooks were distributed equally among children of a class. The number of notebooks each child got was one-eighth of the number of children. Had the number of children been half, each child would have got 16 notebooks. Total how many notebooks were distributed ?

  • 1] 256
  • 2] 432
  • 3] 512
  • 4] 640
  • 5] None of these
Solution
7
Discuss

If \(\left( {x - \frac{1}{x}} \right){ \text{ = }}\sqrt {21} { \text{,}} \)    then the value of \(\left( {{x^2} + \frac{1}{{{x^2}}}} \right) \left( {x + \frac{1}{x}} \right)\) is = ?

 

  • 1] 42
  • 2] 63
  • 3] 115
  • 4] 120
  • 5] 125
Solution
8
Discuss

What number must be added to the expression 16a2 - 12a to make a perfect square ?

  • 1]

    9/4

  • 2]

    11/2

  • 3]

    13/2

  • 4]

    16

Solution
9
Discuss

\(\frac{{225}}{{836}} \times \frac{{152}}{{245}} \div 1\frac{{43}}{{77}} = ?\)

 

  • 1]

    6/49

  • 2]

    6/11

  • 3]

    3/28

  • 4]

    1/7

  • 5]

    None of these

Solution
10
Discuss

(? - 968) / 79 * 4 = 512

 

  • 1] 10185
  • 2] 10190
  • 3] 11075
  • 4] 11080
  • 5] None of these
Solution
# Quiz