Međunarodna matematička olimpijada - Shortlist 1961

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1154IMO Shortlist 1961 problem 11
1155IMO Shortlist 1961 problem 20
1156IMO Shortlist 1961 problem 30
1157IMO Shortlist 1961 problem 40
1158IMO Shortlist 1961 problem 50
1159IMO Shortlist 1961 problem 60