The numbers are 11, 13, 15, 17 and 19.
4+5+6+7+8 = 30
Zero. Any five consecutive natural numbers will contain at least one multiple of 2 and at least one multiple of 5, meaning that the product will be a multiple of 10.
3, 5 and 7 are consecutive odd prime numbers.
Consecutive numbers will always total an odd number. Consecutive odd numbers or consecutive primes would be 5 and 7.
40 ÷ 5 = 8, so the average of the five numbers will be 8. That means that 8 will be in the middle. 6 + 7 + 8 + 9 + 10 = 40
The numbers are 73, 74, 75, 76 and 77.
60.
The numbers are 32, 34, 36, 38 and 40.
The numbers are 11, 13, 15, 17 and 19.
12345/5 = 2469 so the numbers are:2467, 2468, 2469, 2470, 2471
4+5+6+7+8 = 30
Simplify the problem. It's the same as 5*7000 plus the sum of the five consecutive odd numbers between 0 and 10. So: 35,000 + 1 + 3 + 5 + 7 + 9 = 35,025
55555 55 55 5 5 5 5 5 55 5 5 5
Zero. Any five consecutive natural numbers will contain at least one multiple of 2 and at least one multiple of 5, meaning that the product will be a multiple of 10.
There are five such numbers.
The value of a five dollar bill is five dollars. It's not clear what you mean by "consecutive serial numbers." If you mean that the bill's serial number looks like "12345678" or something, then a collector might be willing to pay a small premium for it as a curiosity. If you mean that you have two or more five dollar bills where the serial numbers are consecutive, they're worth five dollars each, period.