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Chapter 13: Q. 2. (page 868)

IfnA=8,nB=12,andnA鈭�B=3,findnA鈭�B.

Short Answer

Expert verified

The final answer is 17.

Step by step solution

01

Step 1. Given information.

The given information is -

nA=8nB=12nA鈭�B=3

02

Step 2. Find nA∪B.

To find we apply the theorem of counting formula.

nA鈭�B=nA+nB-nA鈭�B=8+12-3=20-3=17

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