Question

which number should go next in the line? 1-1-2-3-5-8-13-? a)8. b)13 c)21 d)26. e)31. помогитееееее пожалуйста ​

Answer 1

Ответ:

Правильный ответ - 21

Объяснение

Answer 2

To determine which number should go next in the line 1-1-2-3-5-8-13-?, we can observe a pattern known as the Fibonacci sequence. The Fibonacci sequence is a series of numbers in which each number is the sum of the two preceding ones.

In this case, the sequence starts with 1 and 1. To find the next number, we add the two preceding numbers: 1 + 1 = 2. Then, we add the last two numbers again: 1 + 2 = 3. Continuing this pattern, we get 2 + 3 = 5, 3 + 5 = 8, and 5 + 8 = 13.

Therefore, the next number in the sequence is 21 (13 + 8).

The correct answer is c) 21.