Best Answer

8/100 or 2/25

Q: To win 1 million you must draw two cards whose sum is nine from a stack of cards numbered 1 to 10 What is the chance that your two cards will have a sum of nine?

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The answer depends on 6.5 million what, and in what units. A stack in 50 pounds notes will be different from a stack for the same amount in 1 penny coins.

17 million one-dollar bills would stack to about 6,091.67 feet high.

There are 4 suits

There are four 4's in a standard deck of 52 cards.

There are two possible results: If there are only 10 cards in the stack Out of the possible outcomes of drawing two cards, 4 outcomes have a sum of 9.(1+8, 2+7, 3+6, 4+5) The total number of potential combinations are 10 potential choices for the first card and 9 for the second or 10x9=90 The odds of drawing the desired total (9) is 4/90 or 1 in 22.5 If there are more than 10 cards in the pile (several runs of 1-->10). There are still a limited number of 2 card combinations that sum to 9: 1+8, 2+7, 3+6, 4+5 The number of combinations of cards that can be drawn are 10 potential choices for the first card and 10 for the second or 10x10=100. The odds of drawing the desired total (9) is 4/100 or 1 in 25

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The answer depends on 6.5 million what, and in what units. A stack in 50 pounds notes will be different from a stack for the same amount in 1 penny coins.

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17 million one-dollar bills would stack to about 6,091.67 feet high.