Seating rules

In a class are 24 seats but in 7.B class are only 18 students. How many ways can student seat? (The class has 12 benches. A bench is for a pair of students.) Result (large number) logarithm and thus write down as powers of 10.

Correct result:

log n =  20.9354

Solution:

n=242322212019181716151413121110987 n=V18(24)=24!(2418)! n=861733891296165888000  logn=20.9354 n=1020.9354



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