Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

In which direction should the missing arrow point?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Which part of London exists in France as well ?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Can you find out the total number of triangles in the given figure?

What does this rebus means ?

When it is alive we sing, when it is dead we clap our hands. What is it?

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?