MathDB

Lamija and Faris are playing the following game. Cards, which are numerated from

1

100

, are placed one next to other, starting from

1

100

. Now Faris picks every

7

th card, and after that every card which contains number

7

. After that Lamija picks from remaining cards ones divisible with

5

, and after that cards which contain number

5

. Who will have more cards and how many ? How would game end, if Lamija started with "

5

rule" and Faris continues with "

7

rule"?

Problem Statement