There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?

What does below chemistry rebus means?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Can you count the number of squares in the figure below?

What have one eye but still cannot see?

How can you tell a raw egg from a hard-boiled egg?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

There are 3 apples in the basket and you take away 2. How many apples do you have now?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?