What Adam and Eve do not have but the rest of the people have?

Can you identify the famous TV character from the rebus below?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

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?

Can you write down eight eights so that they add up to one thousand?