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Q: Sum of the first 100 odd numbers?

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The sum of the first 10 odd whole numbers is 100.

The sum of the 25 primes less than 100 is even (it is 1060).The first prime number is 2. Every other prime number is odd.So, of the 25 primes less than 100, one is even and 24 are odd.Any two odd numbers sum to an even number. Therefore, an even number of odd numbers has an even sum. So the sum of 24 odd numbers is even.Therefore, the sum of the 25 primes less than 100 is even.

100

200

The sum of an odd number of odd numbers will be odd.

Related questions

The sum of the first 10 odd whole numbers is 100.

The sum of the first 100 odd numbers (1 through 199) is 10000 (ten thou)

The sum is 10,000.

100

100

This is very easy. Simply square the number: 100 squared (100 x 100) = 10,000. So, the sum of the first 100 odd numbers is 10,000.

It is 100^2=10000

No 5 odd numbers add up to 100. The sum of any two odd numbers is even. The sum of any two even numbers is even. So the sum of any 4 odd numbers must be even. Take that and add an odd number and the sum must be odd. Therefore, the sum of any 5 odd numbers must be odd. 100 is even. In conclusion: The sum of any odd number of odd numbers is odd.

The sum of the first 600 odd numbers is 360,000.

The sum of the first 15 odd numbers is 225.

The sum of the first 8,000 odd numbers 64,000,000.

The sum of the first 300 odd numbers is 90,000

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