The number of rectangles on a chess board is

The number of rectangles formed in a chess board is

Number of unit squares in a chess board is

The area of each square on a chess board is 4sqcm. Find the area of the board. (a) At the beginning of game when all the chess men are put on the board, write area of the squares left unoccupied. (b) Find the area of the squares occupied by chess men.

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

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

Find the number of squares in chess board.

(i) Find the number of reatangles of any size in a chess board (ii) Find the number of squares of any size in a rectangle of size 8xx 5 .

(i) Find the number of reatangles of any size in a chess board (ii) Find the number of squares of any size in a rectangle of size 8xx 5 .

In a class each students plays chess or carom or both .The number of students who play chess carom ,and both are 11,12 and 3 respectively Find the percentage of those who play only chess.