Quiz Discussion

$\left\{ {\left( {64 - 38} \right) \times 4} \right\} \div 13 = ?$

• 1] 4
• 2] 1
• 3] 8
• 4] 2
• 5] 5

The cost of 5 pendants and 8 chains is Rs. 145785. What would be the cost of 15 pendants and 24 chains ?

• 1] Rs. 325285
• 2] Rs. 439355
• 3] Rs. 550000
• 4] Cannot be determined
• 5] None of these

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

• 1]

  $\frac{8}{{{x^8} + 1}}$

• 2]

  $\frac{8}{{{x^8} - 1}}$

• 3]

  $\frac{8}{{{x^7} - 1}}$

• 4]

  $\frac{8}{{{x^7} + 1}}$

The value of $\frac{{{x^2} - {{\left( {y - z} \right)}^2}}}{{{{\left( {x + z} \right)}^2} - {y^2}}}{ \text{ + }}\frac{{{y^2} - {{\left( {x - z} \right)}^2}}}{{{{\left( {x + y} \right)}^2} - {z^2}}} +\frac{{{z^2} - {{\left( {x - y} \right)}^2}}}{{{{\left( {y + z} \right)}^2} - {x^2}}}$   is = ?

• 1] -1
• 2] 0
• 3] 1
• 4] None of these

Evaluate : ${{ - {{\left( {4 - 6} \right)}^2} - 3\left( { - 2} \right) + \left| { - 6} \right|} \over {18 - 9 \div 3 \times 5}}$

• 1]

  $\frac{3}{8}$

• 2]

  $\frac{4}{7}$

• 3]

  $\frac{8}{3}$

• 4]

  $\frac{7}{4}$