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#68 Another 2025 puzzle
Set by Peter Rowlett
The square root of 2025 is 45. The divisors of 45 (apart from 45 itself) are 1, 3, 5, 9 and 15. The product of these numbers is 2025.
The last year that was a square number was 1936. Does 1936 also have this property?
What is the smallest square number with this property? Does it work for all square numbers?
Solution next week
#67 Pandigital sums
Solution
There are four solutions to ABCD + EF = GHIJ where GHIJ = 2034. 1956 + 78, 1958 + 76, 1976 + 58 and 1978 + 56 all work.
There are…
