Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

When it's bad luck to meet a black cat?

James Bond is caught up in a mysterious scenario where the evil villain has him blindfolded. He somehow breaks through the handcuffs but is unable to get the blindfold off. Upon searching, he comes across a bow and 3 arrows. He can hear the villain speak, and thus tries to take a shot at him. He launches the first arrow, it misses the villain. He then launches the second arrow and it misses by a greater margin.

What is the probability that this third shot our James bond takes will be worse than the second shot?

You are given 16 witch hats. The hats are divided in four different colours – red, blue, green and yellow. Every colour has been assigned to four hats. Now each of the hat will be glued with a label of an arithmetic sign – ‘+’, ‘-‘, ‘x’ or ‘/’. But you can label one sign only once on one colour. In such an arrangement, the hats can be uniquely defined by its colour and symbol.

Can you arrange all the 16 hats in a 4x4 grid in a fashion that no two rows and columns have a repetition of colour or sign?
We have arranged four hats in the below picture to assist you.

What does this rebus means ?

PROG WORKRESS

If a wheel has 54 spokes, how many spaces are there between the spokes?