What comes next in this series...1 1 2 3 5 8 13 and tell me why?
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21. It's the Fibonacci sequence, where the next number is the result of adding the last two numbers.
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The pattern in the series is that the number is added to the number before it.
1 + nothing = 1
1 + 1 = 2
....
5 + 8 = 13
1 + nothing = 1
1 + 1 = 2
....
5 + 8 = 13
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The next numbers are 21 and 34 because 8+13 is 21 and 13+21 is 34, do you get the pattern? You take the last two numbers and add them to get the next number.
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1+1=2 2+1=3 3+2=5 ... 13+8=21
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Next number is the sum of the previous two so after 8 and 13 will be 21, 34, 55...so on