Answer: There are eight.
Step-by-step explanation: If you look closely, the middle match stick is not the reflection in the mirror, there is one, matchstick behind the lighter. One has to count them. So in total, there are eight matches.
so equation is
amount of sticks = 3n -2
n = the pictures number
24 - 2 = 22 sticks in the 8th picture
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