In a survey of 30 students on a class it is seen that, 19 students math, 17 students music 11 students history, 7 students math and history, 12 students math and music 5 students music and history and 2 of them are studing taking above three subjects. From the above data show that (1) How many students are studing taking math but avoiding history? (2)How many of them studying absolutely taking two subjects?

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