Brain Test Level 105 Each of these brothers has a sister. How many siblings are there

Daze Puzzle provides a complete walkthrough for "Brain Test Level 105: Each of these brothers has a sister...

By Daze Puzzle /
Question
Each of these brothers has a sister. How many siblings are there?
Hints
Hint 1:
They only have 1 sister.
Step 1
Step 2
Answer
The sister of each of them is the same person so the answer is “6 = 5 brothers + 1 sister”.