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?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Can you replace the question mark with the correct number in the below table sequence?

What is the next number in this matchsticks series riddle?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?