A Teaser for Teenagers
Sibford’s senior teenagers may rightly feel that they have been ignored by the Scene when it comes to competitions – so here is a puzzle for ANYONE who is not yet twenty.
The following sums were prepared on a computer which has the unfortunate fault of introducing an error of +1 or -1 into every figure it prints, ie every figure is one more or one less than the correct figure. Can you find the correct ones?
| 43 | 7668 | 6323 | 2910 |
| +57 | +2692 | +9606 | -1497 |
| 207 | 9027 | 23256 | 2106 |
Please send your answers to the Editor by 16 May and include your name, age, address & school (if appropriate). A small prize will be awarded – if necessary, taking account of neatness (of the submission not the submitter).
An EXTRA PRIZE will be given for a computer programme to solve such puzzles.
D G Tell
[With many thanks to Adrian Lamb]