Sum up to two hundred
Probability
Level
2
I have three $50 bills, ten $20 bills and five $10 bills in my wallet. How many different ways are there for me to pay an invoice of $200 using exactly ten bills?
3
1
2
4
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
There are three possible combinations to sum up $200 using ten bills. To understand the combinations easier, $ sign will be omitted.
2 0 0 = ( 2 0 ∗ 1 0 )
2 0 0 = ( 5 0 ∗ 1 ) + ( 2 0 ∗ 6 ) + ( 1 0 ∗ 3 )
2 0 0 = ( 5 0 ∗ 2 ) + ( 2 0 ∗ 2 ) + ( 1 0 ∗ 6 )
As I have only five $10 bills, the third method should be omitted. Therefore the answer is 2.