Lời Giải
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twice the hiệu of a number and 3 is 5two less than five times a number3 coins is tossed 7 times. What is the probability 3 heads and 1 tail?Johnny has 3 apples and he gives away 2. Find how many apples Johnny has left.If two people both leave their houses at 6:00 and one person goes 8mph and the other goes 7mph and they are 20 miles away from each other what time would they meet