self Maths Puzzle

Use four 5s and some of the symbols +, ×, −, and ÷ to give expressions for 0, 1, 2, and 5

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self Other Question

An apple costs half a dollar while a pear costs a dollar. Bob at first bought an apple, then he tought: "I already paid half a dollar, and I have an apple that is also worth half a dollar. So if I give teh apple to the shopkeeper, , he would overall receive a dollar from me. That should be enough to get me a pear." Is Bob right? mini and vinay are quiz masters preparing for the quiz.in 'x' minutes,mini makes 'y' ques. more than vinay.if it were possible to reduce the time needed by each to make a question by two minutes, then in 'x' minutes mini would make 2y questions more than vinay.how many questions does mini makes in 'x' minutes?