its the Fibonacci sequence
The spacing is 6 1+6=7 7+6=13 13+6=19 19+6=25 so the missing number in the sequence is 13
Fibonacci sequence Fibonacci sequence
8 and 34 Alterative answer: Convensionally, the Fibonacci sequence starts with two 1s. So 1 and 8 are missing.
arithmetic
Usually a sequence is written using subscripts to represent a number in the sequence. Example: The sequence 1, 7, 13, 19, 25 is by adding six each time. So we can write it as: a_0 = 1 a_1 = 7 a_(n) = a_(n-1) + 6, where n is the subscript.
The spacing is 6 1+6=7 7+6=13 13+6=19 19+6=25 so the missing number in the sequence is 13
Fibonacci Sequence
Fibonacci sequence Fibonacci sequence
8 and 34 Alterative answer: Convensionally, the Fibonacci sequence starts with two 1s. So 1 and 8 are missing.
arithmetic
Usually a sequence is written using subscripts to represent a number in the sequence. Example: The sequence 1, 7, 13, 19, 25 is by adding six each time. So we can write it as: a_0 = 1 a_1 = 7 a_(n) = a_(n-1) + 6, where n is the subscript.
The pattern is plus 7. So the next number used to be 1.
1, 1 are the first two numbers in the sequence; so, that's where you begin. In the Fibonacci sequence, you add numbers. Each sum is added to the previous largest number, to make the next number in the sequence. So, adding the first two numbers; 1 + 1 = 2. Then, as 2 was the resulting sum; and one was the last largest number, you add them. 1 + 2 = 3. And so on... The first ten numbers in the sequence are; 1, 1, 2, 3, 5, 8, 13, 21, 34, 55. It continues like this, indefinitely.
13, 21 - it is the Fibonacci sequence
121
Paris - 1979 America the Beautiful 1-13 was released on: USA: 1980
Start with the numbers 1 and 1. After that, every number in the sequence is the sum of the previous two numbers. Thus, the sequence starts with: 1, 1, 2, 3, 5, 8, 13, ...