Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

I look at you, you look at me I raise my right, you raise your left. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

There is something which is always coming but never arrives?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

If six children and two dogs were under an umbrella, how come none of them got wet?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.