China Naming Network - Ziwei knowledge - Four students took part in the speech contest, and the order of the contest was decided by drawing lots. The teacher took out four cards, and four students randomly selected one, first drawing "J".
Four students took part in the speech contest, and the order of the contest was decided by drawing lots. The teacher took out four cards, and four students randomly selected one, first drawing "J".
Know through analysis;
(1) Because three blocks of "k" are the most and 1 blocks of "j" are the least, the possibility of drawing "k" is the greatest, and the possibility of drawing "j" is the least;
(2) To make the possibility of drawing "j" and "k" equal, the number of "k" and "j" should be the same. Because there are four cards, the number of cards "J" and "K" should be two each.