Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

Find the next number in the series below

21 32 54 87 131 ?

What runs around the whole yard without moving?

You need to arrange three 7 and mathematical symbols to form number 1?

What has one letter and starts with an E?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

It belongs to you, but other people use it more than you do. What is it?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?