Find the sum of all the multiples of 3 or 5 below 1000
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sum of multiples of 3 or 5, 1 to 1000.
3=1/2(1000+1)1000= 500×1001=500500×3= 1501500.
5=sum of numbers 1to1000=500500.so , 500500×5=2502500.
3=1/2(1000+1)1000= 500×1001=500500×3= 1501500.
5=sum of numbers 1to1000=500500.so , 500500×5=2502500.
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