Counting 0 as a number, it's 20. Not counting 0, it's 30.
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The sum of the first 100 even numbers is 10,100
The sum of all the first 100 even numbers is 10,100.
6
37
To find the even two-digit numbers where the sum of the digits is 5, we need to consider the possible combinations of digits. The digits that sum up to 5 are (1,4) and (2,3). For the numbers to be even, the units digit must be 4, so the possible numbers are 14 and 34. Therefore, there are 2 even two-digit numbers where the sum of the digits is 5.