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joi, 2 aprilie 2026

PROBLEM C : 2870 from PROBLEMS for the ANNUAL COMPETITION of "GAZETA MATEMATICĂ"

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          In GMB 5/2005 magazine , pages 234 (Romanian version) and 236 (English version).           The problem says :        C:2870.   Fi...
marți, 31 martie 2026

A RATIONAL VALUE of COSINE // مقدار گویای کسینوس

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               In the magazine GAZETA MATEMATICĂ No 4, 1978 , on covers 3-4 the following Problem appears (as a solution to the one proposed...
luni, 30 martie 2026

Problem 2954 from REVISTA MATEMATICĂ a ELEVILOR din TIMIȘOARA

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 You can see issue 1-1977 from which I took the issue (page 62), here . A larger collection is here .               2 954.   Determine the r...
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marți, 17 martie 2026

PROBLEM E : 6185 from the magazine GAZETA MATEMATICĂ

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          From GMB 4/1978 page 164. In translation :                          " E : 6185*.   Knowing that the numbers  4830,  448230, ...
vineri, 6 martie 2026

A PROBLEM that JUMPED like a KANGAROO

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           The author of the problem is George STOICA from Canada. Although proposed for 12th grade (the last grade before college), it only...
luni, 9 februarie 2026

مسئله ۶۷۶۷ از سری B مجله ریاضی، رومانی // Problem 17 384 from a "Gazeta Matematică seria B" , Romania

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 به پست وبلاگ دیگرم هم سر بزنید I've written about this number before here . Today I'm posting another problem.                   ...
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marți, 3 februarie 2026

A solution “pulled out of a hat”. An explanation of the trick // Uma solução "tirada da cartola". Uma explicação do truque

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 In the last issue of the Exercise Supplement of the Mathematics Gazette, most of the problems seemed trivial. Maybe this S:L 25. 411 is t...