book Maths Puzzle Numerical Ability

I think this is the right category to put this in

Evaluate the factorial expression.

(n+5)!/n+5

I got n+5! as my answer. is that right?

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book Other Question

two cares leave st.louis. one travels north and one travles south. the care traveling north is moving 10mph faster than the care traveling south. after three hours the cars are 354 What are the length and width of a rectangle that has a perimeter of 98 cm and a diagonal of 35 cm?