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What is the missing number in the series 13 , 21 , 34 , 55 , _ , 144 , 233 ?

Note by Al-Amin Hossain
2 years, 11 months ago

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89 · 2 years, 10 months ago

We can see that 13+21 = 34 similliarly, 21+34 = 55 so 55+?=144 answer will be 144-55=89 This Sequence is known as femminachi sequence · 2 years, 11 months ago

Fibonacci*? Also, providing the answer is not the best way to help. · 2 years, 11 months ago

34 - 21 =

55 - 34 =

?? - 55 =

Go for the kill. · 2 years, 11 months ago