What is 13

What is the number in between 50 and 55 that is divisible by 2,3,6,9?

Correct result:

n =  54


2 ...  prime number 3 ...  prime number 6=23 9=32 LCM(2,3,6,9)=232=18  a=LCM(2,3,6,9)=18  50<n<55 n1=1 a=1 18=18 n2=2 a=2 18=36 n3=3 a=3 18=54 n4=4 a=4 18=72  n=n3=54

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