twenty
2 4 6 8
The sum is 17.
15
It is: 2*3*5*7 = 210
There are 320 such numbers.
They will always add up to another even number.
You can figure out the "composite numbers" from any table of primes - all the positive integers that are not prime numbers are composite (the number one should also be excluded). The first four composite numbers are:4, 6, 8, 9
the first four numbers are....... 3.141592654
Infinitely many. If you restrict yourself to positive numbers only, but allow repetitions, then there are 15. If you disallow repetitions, only 2.
There are four even numbers between one and nine. the four even numbers are 2,4,6 and 8.
In multiplication, an even number of negative signs results in a positive product. This is because each pair of negative signs cancels out, leading to a positive outcome. For example, multiplying two negative numbers gives a positive result, as does multiplying four negative numbers. Thus, any even count of negative factors will yield a positive product.
If n is the first number, n + n + 1 + n + 2 + n + 3 will be the sum, which is 4n + 6. 4n is always even, and 6 is even. Therefore, the sum of four consecutive numbers is always even.