An eccentric casino owner decides that his casino should only use chips in $3 and $5 denominations. Which of the following amount cannot be paid out using these chips?  Choose the most appropriate option
A) $19 B) $21 C) $14 D) $9 E) $11
Yes, the number of 3 or/and 5 dollar chips can be zero, however both being zero mean that the casino is paying out $0, which is not realistic.   Each option but E can be represented as the sum of a multiple of 3 and a multiple of 5:   A. $19 = 3*3 + 5*2   B. $21 = 3*2 + 5*3   C. $14 = 3*3 + 5*1   E. $9 = 3*3   Answer: $11.
<result>E</result>
An eccentric casino owner decides that his casino should only use chips in $3 and $5 denominations. Which of the following amount cannot be paid out using these chips?