416 and 418.
420
420
The sum of the first 20 even numbers... is 110
2+4+6+8+10........+40=420
To write 420 million in numbers, you start with the numeral 420 and add six zeros to represent the millions. Therefore, 420 million is written as 420,000,000.
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.
420
It gets very close at 415 kph, just a tad bit shy of the fabled 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.