Question

1. based on the venn diagram below, how many people are in group b or group c? group a 44 15 group b 23 3 17 group c 25 7

Explanation:

Step1: Recall the formula for $|B\cup C|$

$|B\cup C|=|B|+|C|-|B\cap C|$

Step2: Identify the values from the Venn - diagram

$|B| = 23 + 15+3=41$, $|C|=25 + 17+3 = 45$, $|B\cap C|=3 + 17=20$

Step3: Calculate $|B\cup C|$

$|B\cup C|=41 + 45-20$
$|B\cup C|=66$

Answer:

66