SOF International Mathematics Olympiad (IMO)
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IMO Level 1
·
2026
.
Sample
Express 19/10 in its lowest terms.
Explanation
Explanation
The HCF of 19 and 10 is 1. Dividing numerator and denominator by 1 gives 19/10 = 19/10, which is in lowest terms since the new numerator and denominator share no common factor other than 1.
PRO TIP
Re-check your working by substituting the answer back into the original question.