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Yes, 21 is a number in the Fibonacci sequence. Numbers are usually found by adding up 2 numbers.

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Q: Is 21 a number in the Fibonacci sequence?
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What is the name of this number sequence 1 1 2 3 5 8 13 21 34 55?

Fibonacci sequence Fibonacci sequence


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The 16th number of the Fibonacci sequence is 987.


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Leonardo Fibonacci discovered the number sequence which is named after him.


What is the 9th number in the Fibonacci sequence?

According to Fibonacci, who started with 1, the 9th number is 34. Modern mathematicians, who start with 0, consider 21 the 9th number.


What Fibonacci number comes after 21?

Assume the question refers to the standard Fibonacci sequence where the first two numbers are 0 and 1.The sequence progresses :- 0, 1, 1, 2, 3, 5, 8, 13, 21, 34 - which is the number required.


How would one describe a Fibonacci number?

A Fibonacci number, Fibonacci sequence or Fibonacci series are a mathematical term which follow a integer sequence. The first two numbers in Fibonacci sequence start with a 0 and 1 and each subsequent number is the sum of the previous two.


What is the 24th Fibonacci number?

Assuming the Fibonacci sequence starts with the numbers 0, 1, as per sequence A000045, the 24th Fibonacci number is 28657.


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1123 is not a number included in the Fibonacci Sequence.