On a highway two places A and B are 120 km apart. A car from A and a second car from B start at the same time. If the cars travel in the same direction at different speeds, they meet in 6 hours, however if they travel towards each other, then they meet in 1 hour. What are their speeds?

Continue reading “On a highway two places A and B are 120 km apart. A car from A and a second car from B start at the same time. If the cars travel in the same direction at different speeds, they meet in 6 hours, however if they travel towards each other, then they meet in 1 hour. What are their speeds?”
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If a number x is chosen from the numbers 1,2,3 and a number y is selected from the numbers 1,4,9, find the probability p(xy<9>

Continue reading “If a number x is chosen from the numbers 1,2,3 and a number y is selected from the numbers 1,4,9, find the probability p(xy<9).”
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