The probability of choosing a white square on the chess board is 50%

Number of unit squares in a chess board is

The number of rectangles which are not squares in a chess board is

What is the probability of a disc thrown on a chess-board, coming to rest on i] a white square? ii a black square on the border ?

In how many ways is it possible to choose a white square and a black square on a chess board so that the squares must not lie in the same row or column?

Find the number of squares in chess board.

Three squares of chess board are selected at random . The probability of getting 2 squares of one colour and other of a different colour is :

Three squares of Chess board are selected at random.Find the probability of getting 2 squares of one colour and other of a different colour.

Three squares of Chess board are selected at random. Find the probability of getting 2 squares of one colour and other of a different colour.

Three squares of chess board are selected at random. Find the probability of getting 2 squares of one colour and other of a different colour.

The number of all possible squares in a chess board is