Headteacher thinks whether the distribution of pupils in a race in groups of 4,5,6,9 or 10. How many pupils must have at least school possible options?

Correct answer:

x =  180

Step-by-step explanation:

4=22 5 ...  prime number 6=23 9=32 10=25 LCM(4,5,6,9,10)=22325=180  x=LCM(4,5,6,9,10)=180

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