What does A represent on the number line?

1/3

Step-by-step explanation:

There are 6 lines on the way to 1 whole number. that means that each line is 1/6. A is 2/6 on the number line. 2/6 simplified is 1/3.

(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