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IKMC 2015 - Grades 7-8 - Self-study Question 13

IKMC · IKMC 2015 - Grades 7-8 - Self-study

Question 13

Replace each asterisk in $2*0*1*5*2*0*1*5*2*0*1*5=0$ by either + or − to make the equation true. What is the smallest number of plus signs?
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