5412 logs are there and bottom row is 252 and next row is 246 and next row is 240 how many logs are in top and find number of rows?
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a=246
d=-6
n/2(246+(n-1)×-6)=5412
123n-3n^2+3n=5412
3n^2-126n-5412=0
n^2-42n-1804=0
find the roots..
d=-6
n/2(246+(n-1)×-6)=5412
123n-3n^2+3n=5412
3n^2-126n-5412=0
n^2-42n-1804=0
find the roots..
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