Question

5 On a planet mars, a dominant creature, the rap, is nearing extinction. The number of raps bom any year is one more than the (positive) difference between the number born in the previous year and the number born in the year before that. For example, if 4 raps were bom last year and 2 the year before, 3 would be born this year. If 7 raps were born last year and 10 the year before, 4 would be born this year. 2 raps were born in the year 2010 and 9 were born in 2011. What is the first year after 2010 when just 1 rap will be born?
A O 2019 O 2027 2033 2022​

Answer 1

Answer:

2023

Explanation:

As given in question that-

The number of raps bom any year is one more than the (positive) difference between the number born in the previous year and the number born in the year before that.  

In 2010 there are 2 raps and in 2011, 9

The difference is 7

So in 2012, 7 + 1 = 8 raps will born

2010 2

2011 9

 9 - 2 = 7

 7 + 1 = 8

2011 9

2012 8

 9 - 8 = 1

 1 + 1 = 2

Same as-

2013  2

2014  7

2015  6

2016  2

2017  5

2018  4

2019  2

2020  3

2021  2

2022  2

2023  1

So answer is 2023