Are Both Squares the Same Shade of Gray?

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<blockquote class="wp-embedded-content" data-secret="0viYFlsR1O"><a href="https://doyouremember.com/54655/squares-shade-gray">Are Both Squares the Same Shade of Gray?</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://doyouremember.com/54655/squares-shade-gray/embed#?secret=0viYFlsR1O" width="600" height="400" title="&#8220;Are Both Squares the Same Shade of Gray?&#8221; &#8212; DoYouRemember?" data-secret="0viYFlsR1O" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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