kamala kanta

• Oct 26th, 2006

 

ans:18

asdfghjkl

 Profile 

• Nov 6th, 2006

 

18

balaganesh

 Profile Answers by balaganesh 

• Nov 7th, 2006

 

18

Purvi mehta

• Nov 7th, 2006

 

ans:-18

excels

 Profile Answers by excels Questions by excels

• Nov 9th, 2006

 

ans: 18

shikha

• Nov 10th, 2006

 

18

andrew

• Nov 14th, 2006

 

18

sha_2_sha

• Dec 11th, 2006

 

18....

procedure...

3,4,6,9,13,......

steps:  diffrence between 1st and 2nd no   =   1

           diffrence between 1st and 2nd no   =   2

            diffrence between 1st and 2nd no   =  3  and so on....

          diffrence between 5th no and 4th no  = 5

           ie; X - 13  = 5

                X = 18

Sunny

• Dec 15th, 2006

 

ans: 18

saurabh

• Dec 20th, 2006

 

ans . is 18 look the increasing order 3,4,6,9,13...so 1st no subtracted from 2nd no..= 4-3=1like this 2nd from 3rd = 6-4=2 3rd from forth 9-6= 3 4t from 5th= 13-9=4 if we look on the series it increase like 1,2 ,3 ,4 ,so next is add 5 so 13 +5 =18 ans

deepa

• Dec 24th, 2006

 

The answer is 20

dinu0408

 Profile Answers by dinu0408 

• Dec 28th, 2006

 

18

KAMAL SONI

• Feb 7th, 2007

 

19 because they are doing sum of alternative digits i.e, 3+6=9,9+4=13 and 13+6=19 and so on...

deepak

• Feb 28th, 2007

 

ans 18                                                                                                                                                                                 

sumit.manchanda

• Mar 2nd, 2007

 

ans 18 3+1= 4+2=6+3=9+4=13+5=18

shyaamsundar

 Profile Answers by shyaamsundar 

• Apr 10th, 2008

 

Hey guys answer is 20
3-4 =1
4-6 =2
6-9 =3
9-13=5
13-x=7

So the possible value the x can take is 20

kesavak

 Profile Answers by kesavak 

• Jun 3rd, 2008

 

Answer is 18

bcoz 3,4,6,9,13
here 3+1=4(2nd number)
        2nd number+2=6(2rd number)
         6+3=9
         9+4=13
In this way the answer is 13+5=18

the next number is 18

wanderer11

 Profile Answers by wanderer11 

• Aug 7th, 2008

 

The answer is 18 but this is not a fibonacci sequence. In fibonacci sequence every number is the sum of previous two numbers.

maauk21

 Profile Answers by maauk21 

• Aug 7th, 2008

 

The series is (X) , (X)+1, (X+1)+2, (X+1+2)+3, (X+1+2+2)+4, (X+1+2+3)+4. and so on. X=4, So Req term is 18.

siddhartha12261

 Profile Answers by siddhartha12261 

• Oct 2nd, 2009

 

The diffrence between the first two numbers is 1 and again other two numbers is increasing equally by one so at the at 5th position it would be 5
So 13+5=18 is the answer.

hmvasista

 Profile Answers by hmvasista 

• Apr 29th, 2010

 

The answer is 18

ie 3+1=4
    4+2=6
    6+3=9
    9+4=13
so 13+5=18

This is not a fibonacci series.... it is 0,1,1,2,3,5,8,13,21,34....

prititripathi

 Profile Answers by prititripathi 

• Feb 25th, 2011

 

series is like dat difference b/w 3-4 is 0

next one 1 ,2 n so on

so next no. vll b 18