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To sum numbers 1 through N, use this formula: (1 + N)*N/2, so (1+35)*35/2 = 630.
630
The sum of the whole numbers 1 through 1,000 is 500,500.
1 and 630
The sum of all numbers between 1 and 5 is infinite.The sum of whole numbers between 1 and 5 is 2 + 3 + 4 = 9