Quiz Discussion

421 ÷ 35 × 299.97 ÷ 25.05 = ?2

• 1] 22
• 2] 24
• 3] 28
• 4] 12
• 5] 18

Simplify : $1 + {2 \over {1 + {3 \over {1 + {4 \over 5}}}}}$

• 1]

  7/4

• 2]

  4/7

• 3]

  7/5

• 4]

  3/7

There are two examinations rooms A and B. If 10 students are sent from A to B, then the number of students in each room is the same. If 20 candidates are sent from B to A, then the number of students in A is double the number of students in B. The number of students in room A is:

• 1] 20
• 2] 80
• 3] 100
• 4] 200
• 5] None of these

If $\left( {x + \frac{1}{x}} \right){ \text{ = }}\sqrt {13} { \text{,}}$    then the value of $\left( {{x^3} - \frac{1}{{{x^3}}}} \right)$  is = ?

• 1] 26
• 2] 27
• 3] 30
• 4] 36

The value of $\frac{{{x^2} - {{\left( {y - z} \right)}^2}}}{{{{\left( {x + z} \right)}^2} - {y^2}}}{ \text{ + }}\frac{{{y^2} - {{\left( {x - z} \right)}^2}}}{{{{\left( {x + y} \right)}^2} - {z^2}}} +\frac{{{z^2} - {{\left( {x - y} \right)}^2}}}{{{{\left( {y + z} \right)}^2} - {x^2}}}$   is = ?

• 1] -1
• 2] 0
• 3] 1
• 4] None of these