Quiz Discussion

Which smallest number must be added to 710 so that the sum is a perfect cube ?

• 1] 11
• 2] 19
• 3] 21
• 4] 29

In the equation $\frac{{4050}}{{\sqrt x }} = 450{ \text{}}$   the value of x is = ?

• 1] 9
• 2] 49
• 3] 81
• 4] 100

The value of     is ?

• 1]

  0.1

• 2]

  10

• 3]

  ${10^2}$

• 4]

  ${10^3}$

Given $\sqrt 2 = 1.414.$   Then the value of $\sqrt 8$  + $2\sqrt {32}$  -  $3\sqrt {128}$  + $4\sqrt {50}$   is = ?

• 1] 8.426
• 2] 8.484
• 3] 8.526
• 4] 8.876

The square root of $\left( {7 + 3\sqrt 5 } \right)  \left( {7 - 3\sqrt 5 } \right)$   is

• 1]

  $\sqrt 5$

• 2]

  2

• 3]

  4

• 4]

  $3\sqrt 5$