What has many teeth, but cannot bite?

10+10 and 11+11 can give you the same answer.

Explain how?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

There is something which you can be arrested for attempting but not for successfully completing.

Can you name four days which start with the letter 'T'?

In a classic wine shop, the list of three most popular wines are:
- The cost of 1 French wine bottle: 500$
- The cost of 1 German wine bottle: 100$
- The cost of 20 Dutch wine bottles: 100$

John entered the wine shop and he needs to buy
- All three types of wine bottles.
- Needs to buy Dutch wine bottles in multiples of 20.
- Need to buy 100 wine bottles in total.

John has only 10000$. How many wine bottles of each type, John must buy?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Prove that the below maths equation is true.

8 + 8 = 91

Do you know who was buried in John's tomb?