Am. If a bus driver leaves her first stop by 7:00 am., her route will take less than 37 mi
she estimates that the same route will take no less than 42 minutes. Which in
takes to drive the route, m?
r<37 or r3142
r< 37 or r>
42
37 37 >r242

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18