Lily had 95 inches of yarn. After cutting 4 pieces that were each the same length, she had 15 inches of yarn left. How long was each of the 4 peices of yarn that Lily cut?

20 inches

Step-by-step explanation:

Step 1: Subtract the total from what was left

Step 2: Divide the result into the 4 pieces

Each of the four pieces Lily cut was 20 inches.

(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

answer:   14

step-by-step explanation:          

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