80% of students of a class took Statistics and 45% took Mathematics. If each student took
Statistics or Mathematics and 40 took both, the total number of students in the class was:
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1
Answer:
85 students in total in class
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7
Step-by-step explanation:
Simple,
Use n(A U B) = n(A) + n(B) - n(A !''''! B)
so, 100% = 80% + 45% -40 = 125% -40
25% =40, 100% =160 Ans.
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