Solution:

What.

It is clearly mentioned that "What is the name of the fourth son". Note it's a statement with a period(.) and not with a question mark(?).

Most of the people has given the answer as "East" or "Someone".

Solution:

The Girl

Solution:

Ground Floor.

Any person staying on the floor other than the ground floor would have to call the elevator to reach their respective floors. So, the ground floor calls the elevator way above the individual floors.

Solution:

The kids have 4 slices of pizza in their hands but only three pieces are missing from the pizza box.

Solution:

1600

To calculate the entry fee for someone from Britain, we need to count the number of vowels and consonants in the country name and use the given formula.

Country: Britain

Vowels: 2 (i, a)
Consonants: 5 (b, r, t, n)

Using the formula where vowels are worth $300 and consonants are worth $200, the entry fee for someone from Britain would be:

(2 x $300 + 5 x $200) = $600 + $1000 = $1600

So, the entry fee for someone from Britain is $1,600.

Solution:

The thief turned out to be Anthony, who cunningly concealed the watch inside a bucket.

Solution:

The boy on the right is the one. The piece of his shirt is with the deceased girl, as indicated.

Solution:

Batsman hit six and gone retired hurt while the new batsman come to play and get runout for his wicket and the other batsman hit six and made both century and team win..

Solution:

Eggs

Dinosaurs laid eggs long before there were chickens

Solution:

Happy Birthday to jennifer katharine gates :-)