There are 13 cans in the refrigerator. 7 of them are red and 6 of them are blue. In how many ways we can remove 8 cans so that at least one red and at least one blue cans to remain the refrigerator. Choose the correct choice from the following answers.
A) 460  B) 490  C) 493  D) 455  E) 445
460nswer: 460.
<result>A</result>
There are 13 cans in the refrigerator. 7 of them are red and 6 of them are blue. In how many ways we can remove 8 cans so that at least one red and at least one blue cans to remain the refrigerator.