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The sum of all odd numbers from 1 to 64 inclusive is 4,096
The two-digit whole numbers that have no odd factors except 1 are the powers of 2, as these numbers are only divisible by 1 and themselves. The two-digit powers of 2 are 16, 32, 64, and 128. However, 128 is not a two-digit number, so we only consider 16, 32, and 64. Therefore, there are three two-digit whole numbers that meet the criteria: 16, 32, and 64.
25.
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