Quiz Discussion

If $\sqrt 5 = 2.236{ \text{,}}$   then the value of $\frac{1}{{\sqrt 5 }}$ is = ?

• 1] 0.367
• 2] 0.447
• 3] 0.745
• 4] None of these

The smallest natural number which is a perfect square and which ends in 3 identical digits lies between ?

• 1] 1000 and 2000
• 2] 2000 and 3000
• 3] 3000 and 4000
• 4] 4000 and 5000

The value of $\sqrt {\frac{{0.16}}{{0.4}}}$   is = ?

• 1] 0.02
• 2] 0.2
• 3] 0.63
• 4] None of these

Determined the value of $\frac{1}{{\sqrt 1 + \sqrt 2 }}{ \text{ + }}  \frac{1}{{\sqrt 2 + \sqrt 3 }} +   \frac{1}{{\sqrt 3 + \sqrt 4 }} +   ...... +   \frac{1}{{\sqrt {120} + \sqrt {121} }}{ \text{ = ?}}$

• 1]

  8

• 2]

  10

• 3]

  $\sqrt {120}$

• 4]

  $12\sqrt 2$

The square root of $\frac{{{{\left( {0.75} \right)}^3}}}{{1 - 0.75}} { \text{ + }}\left[ {0.75 + {{\left( {0.75} \right)}^2} + 1} \right]$    is = ?

• 1] 1
• 2] 2
• 3] 3
• 4] 4