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Which number does not belong to this series 1,1,2,3,4,5,8,13,21?

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Question ajoutée par Khaled Khalifa , Orthopaedic Surgeon , Icare clinics
Date de publication: 2016/10/25
Rahmath Unnisa Begum
par Rahmath Unnisa Begum , instrumentation engineer , Omaleen

The number 4 is an odd number in this series

 

Aneesa Rahman
par Aneesa Rahman , Teacher of English as a Second Language , Sakarya Egitim Kurumlari

The number 4 does not belong in this Fibonacci series

Gayasuddin Mohammed
par Gayasuddin Mohammed , Advocate , Practicing Law before High Court at Hyderabad

Number 4 is not belongs to the series as the resulted number is the sum of last 2 numbers and hence 4 is the odd man there. thanks.

Utilisateur supprimé
par Utilisateur supprimé

1,1,2,3,4,5,8,13,21?

 

1+1 = 2 , 2+3 = 5, 3+4 = (7, which is missing and not there), 3+5=8 , 5+8 = 13 & 8+13 = 21.

 

So from the above series, 4 is odd and not belongs to the series !!! 

mahindaratne pahalawattaarachchige
par mahindaratne pahalawattaarachchige , Visiting Lecturer,Sri Lanka Institute of Advance Technological Educstion. , Sri Lanka Institute For Advance Technological Education,Kurunagala,Sri Lanka.

4 is'nt on the series summation of the first two numbers is 2(third number).summation of second number and third number is 5(fifth number) .as following the this method we can select the 4 is not in the series.

Utilisateur supprimé
par Utilisateur supprimé

Number 4 does not belong to this series

Number 4 does not belong to this series. The given series is fibonacci number so its always begins with 0 and 1 followed by Fibonacci numbers which are the sum of the previous two Fibonacci numbers.

SOURCE:  Fibonacci numbers

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