If the interior angle of a regularpolygon is $108°$, then it is a-

1. Octagon

2. Hexagon

3. Pentagon

4. Tetragon 

Expand : ${\left(\mathrm{W}-9\right)}^2$

1. $\left({\mathrm{W}}^2-9\mathrm{W}+81\right)$

2. $\left({\mathrm{w}}^2-9\mathrm{W}+18\right)$

3. $\left({\mathrm{W}}^2-18\mathrm{W}+81\right)$

4. $\left({\mathrm{W}}^2-18\mathrm{W}-81\right)$

Surya is $25$ years older than his son. In $5$ years, he will be twice as old as his son. What will be Surya's age after $3$ years?

Which country launched its first commercial satellite on $24$th November $2015$ as a part of its National Space Program?

$1$. Russia

$2$. India

$3$. Japan

$4$. China

What is the noise level of normal conversation?

$1.$ About $60$ dB
$2.$ About $70$ dB
$3.$ About $80$ dB
$4.$ About $90$ dB

After $9/11$ tragedy, the rebuilt World Trade Centre complex in New York is called_____.

$1$. New World Trade Centre 

$2$. Empire State Building 

$3$. One World Trade Centre 

$4$. World Trade Complex

Shimla Agreement, $1972$ between India and Pakistan, was signed in:

$1$. Barnes Court

$2$. Ellerslie Building

$3$. Viceregal Lodge

$4$. Gorton Castle

Which of the following fractions is the highest of all?

1. $\frac{5}{4}$

2. $\frac{4}{3}$

3. $\frac{3}{2}$

4. $\frac{6}{5}$

Ten people can do a work in $30$ days. In how many days, can 15 people complete double the work - 

1.$40$

2. $25$

3. $20$

4. $45$