Final answer:
To find the number of squares that are of other types, subtract the number of milk chocolate squares, dark chocolate squares, and white chocolate squares from the total number of squares. The correct answer is A) 5.
Step-by-step explanation:
To find the number of squares that are of other types, we need to subtract the number of milk chocolate squares, dark chocolate squares, and white chocolate squares from the total number of squares.
Total squares = 18
Milk chocolate squares = 5
Dark chocolate squares = 5
White chocolate squares = 3
Other squares = Total squares - Milk chocolate squares - Dark chocolate squares - White chocolate squares
Other squares = 18 - 5 - 5 - 3 = 5 squares
Therefore, there are 5 squares of other types. So, the correct answer is A) 5.