Hard SOF International Mathematics Olympiad (IMO) · IMO Level 1 · 2019 . Sample What is the HCF of 162 and 243? A 162 B 81 C 243 D 27 Submit Answer Show Explanation Mark as Completed Mark as Important Mark for Review
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What is the HCF of 72 and 108? SOF International Mathematics Olympiad (IMO) . Easy · Mathematics · 2017 See Explanation
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Find the next term: 2, 6, 10, 14, ? SOF International Mathematics Olympiad (IMO) . Hard · Mathematics · 2019 See Explanation
Find the mean of 13, 15, 17, 19, 21. SOF International Mathematics Olympiad (IMO) . Medium · Mathematics · 2016 See Explanation