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The Times & The Sunday Times
The Times & The Sunday Times
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Two Brains

By Raymond Keene
The Times
By Raymond Keene
The Times

Question 1 Can you use all ten digits to write down two years and the difference between them?

Question 2 What follows in the sequence st, nd, rd, th, ...?

Thanks to Doug Graham and Reg Gale. Please send your puzzles to keenebrain@aol.com. Two Brains, by Ray Keene, is available at the Books First price of £5.69 with free p&p (rrp £5.99) on 0870 1608080 or www.timesonline.co.uk/booksfirst.