math
posted by kelly .
hi, could someone please help me solve this problem, i know the answer is 24, i just need to know how to solve it.
a "lucky dollar" is one of nine symbols on each reel of a slot machine with three reels. a player receives one of the various payouts whenever one or more lucky dollars appear in the window of the machine. find the number of winning combinations for which the machine has a payoff.

$ in first slot with 81 possibilities for the next two
$ in the second slot with 8 possibilities in the left slot and 9 in the right slot = 72 (Double counting must be avoided; hence the 8)
$ in the third slot with 8 possibilities in the left slot and 8 in the middle slot = 64.
Total = 81 + 72 + 64 = 217 possible payout combinations (out of 9^3 = 729)
Respond to this Question
Similar Questions

Math HELP!! FAST!!
Can someone help me solve this and write the answer in simplified radical form? 
physics
A reel has radius R and moment of inertia I. The reel is positioned at the top of a slope and a block is also on the slope with some angle theta. One end of the block of mass m is connected to a spring of force constant k, and the … 
Algebra
Please Solve: 4x=5 I thought the answer was 9 but that doesn't seem to be it. Can someone please help? 
Math
Solve the equation. (the 6s are supposed to be subscripted, but I can't type subscripts) Problem: log6 7  log6 x = 4 Choose one answer. a. 7/24 b. 7/1296 c. 7/4 d. 1296/7 I am so lost, can you please help me understand this? 
5th grade math
Which answer shows data with a range of 49? 
math
Please show me how to solve: Sharon has some onedollar bills and some fivedollar bills. She has 14 bills. The value of the bills is $30. Solve a system of equations using elimination to find how many of each kind of bill she has. 
math
Can someone please help me with this word problem!? 
Algebra 2
Solve for x under the assumption that x > 0. Enter your answer in interval notation using grouping symbols. x  (10/x) < 9 I need someone to show me how to work through this type of problem, I don't understand it. 
Algebra 1
I'm having trouble solving x=2(x1)+6 I understand but I get confused on some of the problem and this is one of them. It's probably very simple to get the answer but can someone please just walk me through on trying to solve it? 
Math (just need some help)
Solve the system using an augmented matrix. x3y=17 2x6y=26 Can someone please explain what I am supposed to do in this problem?