A bag contains only red and green marbles. For any 5 marbles we pick, at least one is red. For any 6 marbles we pick, at least one is green. What is the largest number of marbles the bag can contain?

A 11

B 10

C 9

D 8

E 7

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A bag contains only red and green marbles. For any 5 marbles we pick, at least one is red. For any 6 marbles we pick, at least one is green. What is the largest number of marbles the bag can contain?

A 11

B 10

C 9

D 8

E 7

A 11

B 10

C 9

D 8

E 7

- IbrahimAhmad2004
**Posts:**5**Joined:**Fri Feb 08, 2019 12:55 pm**Reputation:****0**

Julia has four different coloured pencils and wants to use some or all of them to paint a map of an island divided into four nations. The map of two nations with a common border cannot have the same colour. In how many ways can she colour the map of the map?

- IbrahimAhmad2004
**Posts:**5**Joined:**Fri Feb 08, 2019 12:55 pm**Reputation:****0**

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