A fitness class can be organized into 10 groups with an equal number of participants in each group or into 15 groups with an equal number of participants in each group. What is the smallest possible number of participants in the class?
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appreciated!
thanks a lot
thanks, this one was quick. LCM of 10 and 15 and done.
yep, same here. took me like 20 seconds lol
wait how did you get it so fast? i was listing multiples 😅
is it just me or does 150 look tempting because it's the product? took me a sec to remember they want the smallest one.
Easy level but good reminder to read 'smallest possible' carefully. I almost picked one of the bigger options.
same, the word smallest is doing a lot of work here
can someone explain why 75 doesn't work? i get that 10 doesn't divide it but i want to be sure i'm not missing something.
right, 75 splits into 15 groups fine but not into 10 equal groups, so it's out
What it tests
Your understanding of divisibility rules, least common multiples, and greatest common factors.
Common trap
Forgetting that 1 is not prime and that every integer divides 0.