Three-step 78424

In the physical education lesson, students entered the two-step, three-step, four-step, six-step, and eight-step classes, but there was always one student left. How many students practiced if there were more than 40 and less than 50?

Correct answer:

n =  49

Step-by-step explanation:

2 ...  prime number 3 ...  prime number 4=22 6=23 8=23 LCM(2,3,4,6,8)=233=24  a=LCM(2,3,4,6,8)=24  n=a+1 n1=a+1=24+1=25 n2=2 a+1=2 24+1=49 n3=3 a+1=3 24+1=73 40<n<50  n=n2=49



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