Sequence Of Numbers

Algebra Level 1

What number comes next in the following sequence?

1 , 1 , 2 , 3 , 5 , 8 , 1,1,2,3,5,8,\cdots


The answer is 13.

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9 solutions

Satyabrata Dash
Mar 1, 2016

It's the FIBONACCI SEQUENCE , where any term is represented as the sum of the preceeding two terms. i.e 1+1=2

1+2=3

2+3=5

3+5=8

5 + 8 = 13 5+8=13

Rama Devi
May 18, 2015

This is the famous Fibonacci series.The next term is the sum of the two previous terms.Therefore the next term is 8+5,which is 13.

Andrias Meisyal
Aug 16, 2014

The pattern is simple. The next following number is sum of two previous numbers.

It's Fibonacci number...

Jeremy Bansil - 6 years, 10 months ago

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I am so sorry. I just realized it. Thank you.

Andrias Meisyal - 6 years, 9 months ago

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@Andrias Yuwantoko You are not wrong too :)

Victor Loh - 6 years, 9 months ago
Ashish Menon
Jun 2, 2016

It follows the fibonacci sequence . So, the answer is 8 + 5 = 13 8+5 = \color{#69047E}{\boxed{13}} .

Jack Rawlin
Dec 22, 2014

The equation for this sequence is

a k = a ( k 1 ) + a ( k 2 ) a_k = a_{(k-1)} + a_{(k-2)}

Since we are looking for the seventh term ( k = 7 k = 7 )

a 7 = a 6 + a 5 a_7 = a_6 + a_5

We already know that a 6 = 8 a_6 = 8 and a 5 = 5 a_5 = 5 so

a 7 = 8 + 5 = 13 a_7 = 8 + 5 = 13

So the next number in the sequence is 13 13

Fun fact: This sequence is known as the Fibonacci sequence

Vishal S
Dec 16, 2014

In the given sequence the sum of the consecutive term is the next term.

Since 5+8=13

therefore the next term is 13

Ritam Baidya
Dec 3, 2014

we simply find the next term adding the previous terms as 1+1=2 , 1+2=3 and so on..so the missing value is equal to 5+8=13

Aakash Singh
Sep 11, 2014

Simply Fibonacci numbers. add the previous two no of sequence to get the new number.

Victor Loh
Aug 17, 2014

This sequence is known as the Fibonacci Sequence, in which a number is the sum of the previous two numbers. Hence the desired answer is 5 + 8 = 13 5+8=\boxed{13} .

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