It is 17.
408 = 2 × 2 × 2 × 3 × 17
Sum = ½ × number of numbers × (first number + last number) = ½ × (462 - 408 + 1) × (408 + 462) = ½ × 55 × 870 = 23,925
Prime numbers are not divisible by any numbers other than themselves and 1.
The answer is 418Improved Answer:-CDVIII = 408
It is 17.
408 = 2 × 2 × 2 × 3 × 17
408 = 2 x 2 x 2 x 3 x 17
408 / 2204 / 2102 / 251 / 317[2 2 2 3 17] ■
The factors of 408 are: 1 2 3 4 6 8 12 17 24 34 51 68 102 136 204 408 The prime factors are: 2 3 17
2 x 2 x 2 x 3 x 17 = 408
408 = 2 x 2 x 2 x 3 x 17
Sum = ½ × number of numbers × (first number + last number) = ½ × (462 - 408 + 1) × (408 + 462) = ½ × 55 × 870 = 23,925
408 is an even number - as is any number which ends in 0, 2, 4, 6, 8.
No
Prime numbers are not divisible by any numbers other than themselves and 1.
There are an infinite number of possible answers. Think of any number: 2.1358? calculate: 408 - 2.1358 = 405.8642 and then 2.1358 + 405.8642 = 408 You can do that for any of infinite numbers that you can think of. Similarly, apart from 0, you can do that with multiples of any number.