I am an odd number. Take away a letter and I become even. What number am I?

I am a mother. However, I never give birth.

I am a father. However, I never nurse my children.

Wandering is not possible for me, but standing still happens occurs rarely.

Who am I?

What has 13 hearts but no other organs?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Which letter of the alphabet has the most water?

Replace the question mark with the number below given a simple math problem.

If 1+9+8=1, what is 2+8+9?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

What number comes next in the series?

5 15 5 18 5 24 14 20 _