What comes next? 1,1,2,3,5,8,13?

This question presents a number sequence and asks for the next term. The sequence is 1, 1, 2, 3, 5, 8, 13.

• Upon examining the sequence, we can observe a pattern where each number (after the first two) is the sum of the two preceding numbers. This is known as the Fibonacci sequence.
• Let's verify the pattern:
• 1 + 1 = 2
• 1 + 2 = 3
• 2 + 3 = 5
• 3 + 5 = 8
• 5 + 8 = 13
• To find the next number in the sequence, we apply the same rule to the last two terms: 8 + 13 = 21.

Therefore, the next number in the sequence is 21. Options A (19), C (23), and D (27) do not follow the established Fibonacci pattern and are incorrect distractors.