Quiz Discussion

$\sqrt ? \times \sqrt {484} = 1034$

• 1] 2025
• 2] 2209
• 3] 2304
• 4] 2401
• 5] None of these

What is $\frac{{5 + \sqrt {10} }}{{5\sqrt 5 - 2\sqrt {20} - \sqrt {32} + \sqrt {50} }}$      equal to ?

• 1]

  5

• 2]

  $5\sqrt 2$

• 3]

  $5\sqrt 5$

• 4]

  $\sqrt 5$

The value of ${ \text{ }} \root 3 \of {\frac{{0.2 \times 0.2 \times 0.2 + 0.04 \times 0.04 \times 0.04}}{{0.4 \times 0.4 \times 0.4 + 0.08 \times 0.08 \times 0.08}}}$        is ?

• 1] 0.125
• 2] 0.25
• 3] 0.5
• 4] 0.75

If $a = \frac{{\sqrt 3 + \sqrt 2 }}{{\sqrt 3 - \sqrt 2 }},   b = \frac{{\sqrt 3 - \sqrt 2 }}{{\sqrt 3 + \sqrt 2 }}$   then the value of ${a^2} + {b^2}$   would be = ?

• 1] 10
• 2] 98
• 3] 99
• 4] 100

If = the value of x is = ?

• 1] 52
• 2] 58
• 3] 62
• 4] 68