The probability that the family plays a different game on each of the three nights is The probability that the family plays a video game two nights and cards one night is y. The probability that the game played on the first night is played again on the third night
is

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Math it's appreciated. (picture provided)

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years