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Q1.17. If A={a,{b}}, then P(A) isA) {°, {a},{b}, {a,b}} B) {°, {a},{{b}},{a,b}}c) {0, {a},{{b}},{a,{b}} .D) none of these​

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Places A and B are 100km apart on a highway one car starts from A and other from B at the same time. If the cars travel in the same DIRECTION at DIFFERENT speeds, they meet in 5 HOURS. If they travel towards each other, they meet in 1 hour. What are the speeds of two cars?

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