# Find the next number in the series 3, 4, 6, 9, 13,?

18

#### RaviMalik Profile Answers by RaviMalik

• Oct 27th, 2005

18 is right

#### ritu

• Oct 18th, 2006

tell me

how is the ans is 18

#### kamala.kanta

• Oct 26th, 2006

ans:18bzelet n=3, then the numbers are n,n+1,n+2,n+3,n+4,n+5.....

#### maruthi

• Mar 19th, 2007

18 is correct but the explanation is wrong.
Here see the difference.
3  4        4  6        6   9         9  13           13  18
----       ------       ------         -------          --------
1            2            3               4                  5

is it clear?

#### ag005 Profile Answers by ag005

• Sep 1st, 2009

First No. is 3 and second is 4 so the difference is 1
Now the 3 rd no is 6 so d diff is 2(6-4)
next no is 9
and hence difference is 3(9-6)
now next no in series is 13 and difference is 4(13-9)
so
this is a progressive a.p where differences increases by 1 and next tym
so
the difference now will be 5, and adding it to 13 you will get 18

#### Sathya Muthusamy

• May 4th, 2016

18