Answer:
35
Step-by-step explanation:
We can solve this using a Venn diagram or by analysis
We have 30 rabbits that are brown, 12 are male and 7 both brown and male
The number of rabbits that are brown but not male = 30 - 7 = 23
The number of rabbits that are male but not brown = 12 - 7 = 5
So number of rabbits that are brown or male or both = 23 + 7 + 5 = 35