Question : Air quality depicting PM - 2.5 is more hazardous to:

Option 1: Archaeological Monuments

Option 2: National Parks

Option 3: Botanical Garden

Option 4: Old Men and Women

Question : Thinner particles responsible for deteriorating the air - quality resulting in the damage of vital organs are referred as PM:

Option 1: 15.5

Option 2: 10.5

Option 3: 2.5

Option 4: 20.5

Question : The square root of $\frac{2+\sqrt{3}}{2}$ is:

Option 1: $\pm \frac{1}{\sqrt{2}}(\sqrt{3}+1)$

Option 2: $\pm \frac{1}{2}(\sqrt{3}-2)$

Option 3: $\text{none}$

Option 4: $\pm \frac{1}{2}(\sqrt{3}+1)$

Question : 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 25 women complete it?

Option 1: 20

Option 2: 16

Option 3: 25

Option 4: 18

Question : 4 men and 6 women can complete a task in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it?

Option 1: 44

Option 2: 40

Option 3: 15

Option 4: 16

Question : 1 man and 4 women can complete a work in $\frac{65}{4}$ days, while 3 men and 4 women can complete it in $\frac{13}{2}$ days. In how many days will 13 women complete the same?

Option 1: 20

Option 2: 16

Option 3: 14

Option 4: 18