Probability NEED HELP
posted by Hannah .
1. When two fair dice are tossed, what is the probability of a sum of 4 or a sum of 8?
2. When two fair dice are tossed, what is the probability of doubles or a sum over 9?
3. Evaluate 1025! / 1022!
Please help

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There are 36 possibilities with 2 dice.
sum of 4 = 2,2 or 1,3 or 3,1
Sum of 8 = 2,6 or 6,2 or 3,5 or 5,3 or 4,4
1. 8/36
2. Use similar process.
3. 1023 * 1024 * 1025 = ? 
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what is the upper most probability of 3
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