Just do the additions. Or, if you want a shortcut, use the formula for an arithmetic series.
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.
210
It is 192282.
It is 210.
Sixty.
The sum of the composite numbers that are less than 8 is: 4+6 = 10
The sum of all the prime numbers less than 201 is 4,227.
The sum of the two largest prime numbers less than 71 is 128.
The sum of the three greatest prime numbers that are less than 39 is 97.
The sum of the prime numbers less than 10 is2 + 3 + 5 + 7 = 17
If this question means "in the interval 0 to 16 inclusive, is the sum of the odd numbers the same as the sum of the even numbers ?" then the answer is no. The sum of the even numbers is eight more than the sum of the odd ones.
Seven of them.