Quiz Discussion

$\sqrt {\frac{{16}}{{25}}} \times \sqrt {\frac{?}{{25}}} \times \frac{{16}}{{25}} = \frac{{256}}{{625}}$

• 1] 5
• 2] 8
• 3] 16
• 4] None of these

If a = 0.1039, then the value of $\sqrt {4{a^2} - 4a + 1} + 3a$     is:

• 1] 0.1039
• 2] 0.2078
• 3] 1.1039
• 4] 2.1039

While solving a mathematical problem, Samidha squared a number and then subtracted 25 from it rather than the required i.e., first subtracting 25 from the number and then squaring it. But she got the right answer. What was the given number ?

• 1] 13
• 2] 38
• 3] 48
• 4] Cannot be determined
• 5] None of these

If $\sqrt y = 4x{ \text{}}$ then $\frac{{{x^2}}}{y}$ is = ?

• 1]

  2

• 2]

  1/16

• 3]

  1/4

• 4]

  4

$\root 3 \of {\sqrt {0.000064} } = ?$

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