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

Can you place three balls such that the equation shown in the picture holds true?

I shave every day, but my beard stays the same. What am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

What four weights can be used to balance from 1 to 30 pounds?

What is the Surname of Barbie Doll?

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

Whats the next number in the below number sequence pattern.

What number divided by 4 is the same as that number minus 4?

We have arranged an array of numbers below. What you have to do is use any kind of mathematical symbol you know excluding any symbol that contains a number like cube root. You can use any amount of symbols but you have to come up with a valid equation for all of them.

0 0 0 = 6
1 1 1 = 6
2 + 2 + 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6