What is the next number in the Fibonacci sequence after 13?

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Multiple Choice

What is the next number in the Fibonacci sequence after 13?

In this sequence, each term is the sum of the two previous terms. The numbers right before the next term are 8 and 13, so add them to get 21. That makes the next number 21. The other options don’t fit because they aren’t the sum of the two terms immediately before this point (34 would come after 21, while 19 and 26 aren’t sums of the two preceding numbers).

In this sequence, each term is the sum of the two previous terms. The numbers right before the next term are 8 and 13, so add them to get 21. That makes the next number 21. The other options don’t fit because they aren’t the sum of the two terms immediately before this point (34 would come after 21, while 19 and 26 aren’t sums of the two preceding numbers).

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