420
420
To round 415 to the nearest 10, we look at the digit in the tens place, which is 1. The digit to its right, 5, is greater than or equal to 5, so we round up. Therefore, 415 rounded to the nearest 10 is 420.
420.
412, 414, 416, 418, 420, 422, 424, 426. Excluding the 412 and 426, there are 6 even numbers.
420 is a composite, as are ALL even numbers - with the exception of the number 2.
There are 82 prime numbers between 1 and 420.
It gets very close at 415 kph, just a tad bit shy of the fabled 420.
420
The sum of the first 20 even numbers... is 110
Composite. All even numbers except the number '2' are composite.
I am not sure if any two consecutive numbers can add up to an even number.