MathDB
Gunga P4

Source:

October 16, 2021
MOAA 2021Gunga

Problem Statement

How many of the following capital English letters look the same when rotated 180āˆ˜180^\circ about their center?
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Proposed by William Yue
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