Now that I am getting on (I turn 70 today) I want to give you some of my money. I shall give you a sum each year, starting now. You can choose which of the following schemes you would like to use.
1. £100 now, £90 next year, £80 the year after, and so on.
2. £10 now, £20 next year, £30 the year after that, and so on.
3. £10 now, one and a half as much next year, one and a half as much again the year after, and so on.
4. £1 now, £2 next year, £4 the year after, £8 the year after that, and so on.
Of course, the scheme can only operate while I am alive. I look forward to hearing which scheme you choose, and why.
This investigation comes from the 1989 Hertfordshire Information Technology Across the Curriculum (Mathematics and Data Handling) project document.