21 between 13 and 34; it is the Fibonacci numbers where each successive number is the sum of the previous two.
It is 21 + 34 = 55
34. Each number is the sum of the two preceding numbers. This is called the Fibonacci Sequence.
This is a Fibonacci sequence. Each number in the sequence is the sum of the previous two numbers:3+5=85+8=138+13=2113+21=34
This is called the Fibonacci sequence. The last two numbers in the sequence are added together to produce the next. Therefore, following 8 and 13 are: 8 + 13 = 21 13 + 21 = 34 21 + 34 = 55 34 + 55 = 89 55 + 89 = 144
The 9th number in the Fibonacci Sequence is 34, and the 10th number in the Fibonacci sequence is 89.
There is no missing number. The Fibonacci sequence continues: 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765, ...
8 and 34 Alterative answer: Convensionally, the Fibonacci sequence starts with two 1s. So 1 and 8 are missing.
34
The missing number is 34. The progressive difference between the numbers doubles: 4 + 2 = 6 6 + 4 = 10 10 + 8 = 18 18 + 16 = 34 34 + 32 = 66
Fibonacci sequence Fibonacci sequence
It is almost the Fibonacci sequence, which is 0 1 1 2 3 5 8 13 21 34 55 ...1 + 2 = 32 + 3 = 53 + 5 = 85 + 8 = 13So, the sequence is 1 2 3 5 8 13
The answer is 34. The full sequence is called the Fibonachi series. Your sequence is 3 5 8 13 21 3 + 5= 8 8 + 13 = 21 Therefore: 13 + 21 = 34
It is 21 + 34 = 55
The common difference is 13 because 21-8=13, 34-21=13, and 34-47=13.
There are infinitely many possible answers. If the missing number is the second in the sequence, it could be part of an arithmetic progression and so equal 10.4, or it could be in geometric progression and so would be 4, or harmonic progression which would give 1/0.65 = 1.54, approx. Furthermore, he missing number cold be the first or third in the sequence.
34. Each number is the sum of the two preceding numbers. This is called the Fibonacci Sequence.
This is a Fibonacci sequence. Each number in the sequence is the sum of the previous two numbers:3+5=85+8=138+13=2113+21=34