# What is minimum number of each coin I need if it is to be possible for me to give any amount of money from 1c to 50c?

0 votes
47 views
What is minimum number of each coin I need if it is to be possible for me to give any amount of money from 1c to 50c?
posted Jan 23, 2018
Share this puzzle

## 1 Answer

0 votes

For European coins, 7 coins: 2*1c, 2c, 5c, 10c, 20c, 50c

answer Jan 26, 2018 by

Similar Puzzles
0 votes

f I have less than \$1 in coins, what is the largest amount of money I could have and not be able to give someone exactly 50p?

+2 votes

You have a weighing balance, which you can place weights on both sides of. You need to measure all weights between 1 and 1000.

For example if you have weights 1 and 3, you can measure test objects of weights 1, 3 or 4. You can also measure objects of weight 2, by placing 3 on one side and 1 on the side which contain the object to be weighed.

What is the minimum number of weights that you would need to be able to measure all (integral) weights from 1 kg to 1000 kg?