Three spinners 1 through 13 are spun.what is the probability of spinning a five on the first spinner,an even number on the secon
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Since, each row has one more log than the row above it
so, this is arithematic sequence
We are given that
First row is
so,
Last row is
so,
Each row has one more log than the row above it
so,
now, we can find number of rows
we can plug values
we can solve for n
now, we can find total number of logs
now, we can plug values
So,
Number of logs in the pile are 119........Answer