# SOLUTION: can someone help me understand how to solve this type of problems thanks... Problem #1 Using the union rule to answer the following questions. suppose n(A (A LETTER "u" UPSI

Algebra ->  Algebra  -> Probability-and-statistics -> SOLUTION: can someone help me understand how to solve this type of problems thanks... Problem #1 Using the union rule to answer the following questions. suppose n(A (A LETTER "u" UPSI      Log On

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 Algebra: Probability and statistics Solvers Lessons Answers archive Quiz In Depth

 Question 86633: can someone help me understand how to solve this type of problems thanks... Problem #1 Using the union rule to answer the following questions. suppose n(A (A LETTER "u" UPSIDE DOWN) b) = 5 n(A U B) = 35 n (A) = 13 what is n(B)? Problem #2 Show that the stamtements is true by drawing venn diagrams and shading the regions representing the sets on each side of the equals sign. (A (UPSIDE DOWN U) B)' = A' U B'Answer by stanbon(57347)   (Show Source): You can put this solution on YOUR website!Problem #1 Using the union rule to answer the following questions. suppose n(A (A LETTER "u" UPSIDE DOWN) b) = 5 n(A U B) = 35 n (A) = 13 what is n(B)? Ans: n(A union B) = n(A)+n(B)-n(A intersect B) 35 = 13 + n(B) - 5 n(B) = 35-8 n(B) = 27 ====================== Problem #2 Show that the statements is true by drawing venn diagrams and shading the regions representing the sets on each side of the equals sign. (A (UPSIDE DOWN U) B)' = A' U B' Draw two intersecting circles in a rectangle. Draw it again. Shade (A intersect B)' in the 1st Shade (A' union B') in the 2nd ------ Do the two shaded areas look the same? They should. This is one piece of DeMoivre's Rule. ============ Cheers, Stan H.