[" In how many ways we can choose two squares of same dimension from a square grid,formed by "],[(2m+1)" horizontal and "(2m+1)" vertical equi-spaced lines,such that they have either a edge of "],[" comer edge common."]

In how many ways, we can choose two teams of mixed double for a tennis tournament from four couples such that if any couple participates, then it is in the same team?

In how many ways, we can choose two teams of mixed double for a tennis tournament from four couples such that if any couple participates, then it is in the same team?

In how many ways, we can choose two teams of mixed double for a tennis tournament from four couples such that if any couple participates, then it is in the same team?

In how many ways, we can choose two teams of mixed double for a tennis tournament from four couples such that if any couple participates, then it is in the same team?

In how many ways,we can choose two teams of mixed double for a tennis tournament from four couples such that if any couple participates,then it is in the same team?

In how many ways can two squares be chosen on a 8 xx 8 chessboard such that they have only one corner in common?

How many squares are possible if two of the vertices of a quadriateral are (1,0) and (2,0) ?

If 7xx7 grid is cut from an 8xx8 chess board, such that the corners are back in how many ways we an put 2 identical coins,one on a black square and one on a white square,such that they are not placed in the same row or same column