Quiz Discussion

What is the smallest number by which 3600 be divided to make it a perfect cube ?

• 1] 9
• 2] 50
• 3] 300
• 4] 450

The square root of ${ \text{0}}{ \text{.}}\overline { \text{4}}$  is ?

• 1]

  $0.\overline 6$

• 2]

  $0.\overline 7$

• 3]

  $0.\overline 8$

• 4]

  $0.\overline 9$

$99 \times 21 - \root 3 \of ? = 1968$

• 1] 1367631
• 2] 111
• 3] 1366731
• 4] 1367

The least number of 4 digits which is a perfect square is = ?

• 1] 1000
• 2] 1016
• 3] 1024
• 4] 1036

If $3a = 4b = 6c$  and $a + b + c = 27\sqrt {29} { \text{,}}$ then$\sqrt {{a^2} + {b^2} + {c^2}}$is ?

• 1]

  $3\sqrt {29}$

• 2]

  81

• 3]

  87

• 4]

  None of these