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Question 191
Identify the region that represents students studying Biology and Computer not Mathematics.
Solution
Region that represents studying biology = 2 + 4 + 5 + 7
Region that represents studying Computer = 3 + 5 + 6 + 7
Region that represents studying both bio and Computer = 5 + 7
But, 5 here also represents students who study Maths
=> region that represents students studying Biology and Computer not Mathematics = 7
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