## please walk me through these problems… TIA.

1)Orange Computers is breaking up its conference attendees into groups.

Each group must have exactly one person from Division A, two people from

Division B, and three people from Division C. There are 20 people from

Division A, 30 people from Division B, and 40 people from Division C at the

conference. What is the smallest number of people who will NOT be able to

be assigned to a group?

- An eccentric casino owner decides that his casino should only use chips in $5

and S7 denominations. Which of the following amounts cannot be paid out

using these chips?