Quiz Discussion

The simplified value of $\frac{{\left( {1 + \frac{1}{{1 + \frac{1}{{100}}}}} \right)\left( {1 + \frac{1}{{1 + \frac{1}{{100}}}}} \right) - \left( {1 - \frac{1}{{1 + \frac{1}{{100}}}}} \right)\left( {1 - \frac{1}{{1 + \frac{1}{{100}}}}} \right)}}{{\left( {1 + \frac{1}{{1 + \frac{1}{{100}}}}} \right) + \left( {1 - \frac{1}{{1 + \frac{1}{{100}}}}} \right)}} = ?$

• 1]

  100

• 2]

  200/101

• 3]

  200

• 4]

  202/100

A man has Rs. 480 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has ?

• 1] 45
• 2] 60
• 3] 75
• 4] 90
• 5] None of these

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

If $\left( {x + \frac{1}{x}} \right){ \text{ = 2,}}$    then $\left( {x - \frac{1}{x}} \right)$   is equal to = ?

• 1] 0
• 2] 1
• 3] 2
• 4] 5

Find the value of $\sqrt {4 + \sqrt {44 + \sqrt {10000} } }$

• 1] 12
• 2] 8
• 3] 4
• 4] -4