Use a number line to compare the numbers. which shows the correct symbol to compare the numbers? 1.2 1 1/5
<

=

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For this case we must compare the following expressions:

We convert the mixed number to a fraction:

So, we have to compare:

1.2 and 1.2

It is observed that the expressions are equal, so we have the sign of equality "=":

(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

1/4 because there is 4 grades.