Harvey want to paint one wall in his room with squares of different colors. he wants the sides of each square to measure 1 foot. he does not want to repeat any color. the wall is 8 feet high and 10 feet long. how many different colors does harvey have?

80. This is because 8*10 is 80 square feet and assuming that each square is 1 square foot, then there are 80 1 sq. ft. squares on the wall.

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)