Riddles of you see me in water but i never get wet

Riddles of you see me in water but i never get wet

If taken me 5 minutes boil a egg,
¿How many more minutes will it take me to boil 15 eggs?

Answer

5 minutes.

Im very easy to get into but hard to get out of what am i ?

Answer

Cave

What question can someone ask all day long, always get completely different answers, and yet all the answers could be correct?

Answer

"What time is it?"

Think a number.
Calculate twice the number.
Add six.
Calculate half.
Subtract the number you had thought.

Answer

The answer is 3.

What is the favorite dance of dogs?

Answer

Can-can.

Jane is thinking of two whole numbers, and asks Freddy to work out what they are.
The only clue she will give him is that their product is three times larger than their sum.
Can you work out what the two numbers are?

Answer

4, 12

Only for genius:

4 + 4x4 + 4

a) 64
b) 36
c) 24

Answer

c) 24

D + A = 50
A + A + A = 120
D + C = 35
C = ?

Answer

25

How many astronuts have touched the moon with their feet?

Answer

None, they were wearing boots.

You're stuck in a room that has 2 doors. If you open one you die and if you open the other you live. You don't know which is which. To help you, there are two guys. Both of them know which door to take but one always lies and the other one always says the truth. Of course, you dont know who lies and who says the truth.
How do you get out?

Answer

You have to ask either one of them "Which door would the other one say is the right one?"

Then they both point to one door. The liar points to the wrong door because he does the opposite of the truth, and the truth speaking one will point to the wrong door because he will point to the wrong door.

There were some people on the train. 19 get off at the first stop and 17 get on. Now are 68 people.
How many people were on the train to begin with?

Answer

70 people

Why is it dangerous to put the letter "M" into the refrigerator?

Answer

Because it changes ice into Mice.