The sum of adjacent natural numbers is 99. What are the two natural numbers?

The sum of adjacent natural numbers is 99. What are the two natural numbers?

Let the first natural number be X
Then adjacent means that the next one is x + 1
x+x+1=99
2x+1=99
2x=98
x=49
x+1=50
So the two natural numbers are 49 and 50

There is a two digit number whose value is equal to four times the sum of ten digits and one digit number. The ten digit number is 2 less than one digit number. How to find the two digit number?
There is a two digit number whose value is equal to four times the sum of ten digits and one digit number. The ten digit number is 2 less than one digit number. How to find the two digit number?

Let the single digit be x, the ten digit be y, x = y + 2 (1) 10Y + x = 4 (x + y) (2) take y + 2 into (2) and we get: 10Y + y + 2 = 4 (y + 2 + y) 11y + 2 = 8y + 81y-8y = 6, y = 2 take y = 2

There are a series of numbers. The first two numbers are 1 and 2. From the third number, each number is equal to the sum of the two adjacent numbers in front of it
(1) Can the four adjacent numbers 2.0.1.2 appear in turn? Explain the reason
(2) What are the numbers in this column? Explain why

1. No, obviously, 2 + 0 = 2, so after 2,0 there will be only 2,
2. 1 2 3 5 8 3 1 4 5 9 4 3 7 0 7 4 1 5 6 1 7 8 5 3 8 1 9 9 9 8 8 8 8 1 9 9 8 5 2 7 6 5 1 6 7 3 0 3 3 6 9 5 4 9 3 2 5 7 9 1 0 1 1 2... Start cycle 60 number is cycle, 2012 divided by 60 more than 32, the 32nd bit is 8