Maths Magic

One morning Mr Tucker did a magic trick at 9:55 with Jack. 

First, the P.A. chose Jack for the magic trick. Then Jack went to the back of the classroom to write a number between 1 and 63.  After, Jack came back to the side of the classroom to show the paper to the class. Meanwhile, Mr Tucker was looking at the wall for 5 seconds. Mr Tucker turned around.

Then Mr Tucker showed 6 cards to Jack. "Is your number on these 6 cards?"  Jack said 2 of them had his number on them. Lucy A chose 1 of the 2 cards. Mr Tucker choose a card and got the number right.

By David