If it took eight men ten hours to build a wall, how long would it take four men to build it?

Solve the puzzle by telling what does below picture means.

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?

What has many teeth, but cannot bite?

When we see 2 but call 10?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

The centre of the third figure is empty. What digit should fit inside?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Only one colour, 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?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?