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A and B write a test A says " i got a third of the ques. wrong" b says " i got 5 wrong" together they got three quarters of the questions correct.how many did A get correct.

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For every one hour two trains will start at the same time,one from Bangalore to Madras another from Madras to Bangalore On parallel tracks. All trains travel with same speed and each train will take 5 hours to reach the other station.How many trains, one train will meet during the journey? In how many ways you can arrange the numbers on the die .There is only condition that 1,6 and 2,5 and 3,4 will always be on the opposite sides.