Question

In a normal chess board, the number of ways of choosing a rectangle whose diagonals do not intersect at right angles

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Answer 1

Step-by-step explanation:

Poverty

Description

Poverty is the state of not having enough material possessions or income for a person's basic needs. Poverty may include social, economic, and political elements. Absolute poverty is the complete lack of the means necessary to meet basic personal needs, such as food, clothing, and shelter.

Answer 2

Answer:

Hope this helps...

Step-by-step explanation:

There are 64 squares on the chess board.

Two squares can be selected out of 64 in

64

C

2

ways.

Now to select squares such that they have a common side is as follows

in each row, there are 7 possible pairs of adjacent squares.

Therefore there are 7×8=56 pairs of horizontally adjacent squares.

Similarly, in each column, there are 7 possible pairs of adjacent squares.

There are 7×8=56 pairs of vertically adjacent squares.

Hence, there are total 56+56=112 pairs of adjacent squares.