What is common among 11, 69, and 88?

What does this rebus puzzle mean?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

In the picture below can you find the correct switch that will turn on the bulb?

Can you find out the remainder when 3^300 is divided by 5?

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?

You are a thief and you are being punished for your crime. People have tied your head down on a tree with a rope that has been anchored in the ground. A candle is burning below the rope which is slowly burning it away. Just below your head, a Lion has been left loose and is waiting for you to drop down on the ground so he can have you as his lunch.

You have to survive the scenario. How will you do it?

Can you count the number of quadrilaterals in the picture below?

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