Quiz Discussion

The least number that must be subtracted from 63522 to make the result a perfect square is = ?

• 1] 18
• 2] 20
• 3] 24
• 4] 30

If the sum of two numbers is 22 and the sum of their squares is 404, then the product of two numbers is = ?

• 1] 40
• 2] 44
• 3] 80
• 4] 88

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]

  $\frac{7}{4}$

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

The value of $\frac{{\sqrt {80} - \sqrt {112} }}{{\sqrt {45} - \sqrt {63} }} = ?$

• 1]

  3/4

• 2]

  $1\frac{3}{4}$

• 3]

  $1\frac{1}{3}$

• 4]

  $1\frac{7}{9}$