Question 223632: If a clock strikes every hour the same amount of times as that hour, how many strikes in 24hours.
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! This is basically an arithmetic series 1,2,3,,,24
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form is a(n) = a(1) +(n-1)d,,,,,where d is difference btwn terms, and n = 3 terms
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a(24) = 1+(24-1)1 = 24
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The sum of an arithmetic series is,,S= n{ a(1) +a(n)} /2
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S= 24(1+24)/2 = 300
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check,,,use calc to manually add series,,,300,,,,ok
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