Challenge 1: Why the top two always pair up
The top 2 cards always end up as a pair of red and black. Why do you think that happens?
What students worked out5
Student 1
Could be because the special arrangement is top half black and bottom half red when you riffle shuffle it puts them in that order
Student 3
after mixing top 2 cards could be
first 2 cards (red and black) of original packour trick may not work if same color (that of first card) is inserted between first two cards
for rest of pack random mixing will work
Karanteacher
Student 36…Can you try once, and see if you think it’s really possible to have 1st 2 cards are both red or black?
Also, What was the original setup of cards?
Student 5
It’s all because of the special arrangement of BR BR or RB RB cause none of the steps shuffle the cards
Student 6
Sir the deck can be divided into 2 parts that is half black and half red , so that means when it is riffle shuffled it becomes alternate as r & b .