How to Display Custom Meta Box only on Specific Page IDs

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A simple and cleaner solution would be to use !in_array ex:

function mf_1_remove_meta_boxes() {

    if( !is_admin() && !isset( $_GET['post'] ) )
        return;

    if( !in_array($_GET['post'], array('194','185','2') ) )
        remove_meta_box( 'mf_1', 'page', 'normal' );
}

this way you can just add the ids in the array and as many as you want