Class 11th Chap 01 Some Basic concepts of Chemistry new

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Is circular motion an exampleos oscillatory motion ? Hint : Think - is there to and fro motion about some mean position which is the basic concept for oscillatory motion ?

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In a class, 18 students took Physics, 23 students took Chemistry and 24 students took Mathematics of these 13 took both Chemistry and Mathematics, 12 took both Physics and Chemistry and 11 took both Physics and Mathematics. If 6 students offered all the three subjects, find: (i) The total number of students.

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