0 + 1 + 1 + 2 + 3 + 5 + 8 = 20
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the answer is 49.
The sum of the first 25 prime numbers is 1,060.
the sum of the first 15 prime numbers is 328 .
The sum of the first 100 odd numbers is 10,000.
The sum of the first 10 odd whole numbers is 100.