What is the next number of the following sequence 3, 2, 5, 6, 7, 12, 9, ..... ?

Anand Dwivedi   10 years AGO

Series like :
3,4,7,9 : Diff between number is 2

next series 2,6,12 : in first two number diff is 4 another last two no diff is 6 means . so next term should be 8

So 12+8=20

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Jaspalsingh Parmar   10 years AGO

The even digits are increasing by difference of 4,6,8.......
i.e. 2,6,12,......
so 12+8=20
so option 3 is correct simple

Like? Yes (3) | No (1)  

Supriya Mondal   10 years AGO

Difference between 1st number and 3rd number=2
Difference between 3rd number and 5th number=2
Difference between 5th number and 7th number=2

Difference between 2nd and 4th number is=4
Difference between 4th and 6th number is=(4+2)=6
so,difference between 6th and 8th number will be=(6+2)=8
so, answer will be (12+8)=20
so, option 3)20 is the right answer

Like? Yes (4) | No (2)  

SAYAN CHATTERJEE   10 years AGO

two series: 3,5,7,9
& 2, (2+4=6), (6+6=12)
so next will be 12+8= 20 (3)

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Sravanthi   10 years AGO

2 6 12
6-2=4
12-6=6
x-12=8
ans is 20

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Surit Datta   10 years AGO

we divide the series into 2 parts
1st part:- 3,5,7,9....
2nd part "- 2,6,12,..
so the number after 9 will the next number of the 2nd series.
whose difference is like 4 then 6 then 8 ....
so the next number is 12+8 = 20
So option 3
That's it.

Like? Yes (3) | No (2)  

Pradyumna K S   10 years AGO

3,2, 5, 6, 7, 12, 9, ...
3,1(1+1),3+2,2(2+1),5+2,3(3+1),7+2,4(4+1)
Therefore required Term is 20

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sunita chanda   10 years AGO

3,5,7,9 are odd nos.
2+4=6
6+6=12
12+8=20

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Rajkumar Singh   10 years AGO

2+4=6
6+6=12
12+8=20

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Nupur   10 years AGO

Two different series are running parallel

3,5,7,9....
2,6,12,20....

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souraj sadhukhan   10 years AGO

odd positions are increasing with the odd numbers.even positions are incresng 4,6,8,.. like ths.

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asha   10 years AGO

3,2,5,6,7,12,9

take sequence from first number i.e., 3 and leave one number so that it will be in odd numbers
3,_,5,_,7,_9
now take second number sequence from 2
they are in the form of even number difference
2-6=4
6-12=6
12-x=8
so x=12+8
x=20

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Sachin   10 years AGO

First Alter net numbers are on mean difference of 2 ,,and second alternet numbers have a mean difference of 4+n where n=(0,1......n)

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kaladhar   10 years AGO

in order leaving number of count

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murugan   10 years AGO

add 4,6,8 so get 20

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APPIKONDA SANTOSH NAIDU   10 years AGO

20

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saurabh kumar ojha   10 years AGO

odd numbers=3,5,7,9
even numbers=2,6,12,?
we can see that
3+2=5+1=6
6+5=11+1=12
so,
12+7=19+1=20
so the answer is 20

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JUHI RAI   10 years AGO

alternate odd no n diffrcne is 2 andd alternate even no n in incrasing order +4.+6+8

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anupriya sinha   10 years AGO

answer 20

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Abhishek Singh   10 years AGO

diff is 8

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guru   10 years AGO

3,5,7,9.. are the consecutive odd numbers.
2+4=6
6+6=12
So, 12+8=20
Therefore the next number in 3,2,5,6,7,12,9, is 20.

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swarupa nuggu   10 years AGO

Fhh

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sureshbhalaji   10 years AGO

difference between 1 and 3 rd term is 2..then 2nd 4 th term is 4 ..3 nd 5th term is 2 ..4 th and 6 th term is 6 ...so my answer is 12+8=20

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A M ANKIT KALLURAYA   10 years AGO

2+4=6
6+6=12
12+8=20

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Neha Agarwal   10 years AGO

2+4=6,6+6=12,12+8=20

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pallavi kumbhar   10 years AGO

3+2=5
5+2=7
7+2=9 this series is for odd position
now for even position.....
2+4=6
6+6=12
12+8=20

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annad   10 years AGO

12+8

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Arijit Poddar   10 years AGO

6-2=4
12-6=6
So the next difference will be 8.
the next number is (12+8) = 20.

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KUHELI ROY   10 years AGO

2+4=6,6+6=12.Therefore,the next number is 12+8=20.

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ganesh babu   10 years AGO

3, 3+2,5+2,7+2,..
2,2+4,6+6,12+8,...

3, 5, 7, 9
2, 6, 12, 20,30

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Meera R   10 years AGO

3,___,5,___,7,___9,___ (odd numbers)
other given numbers are 2,6,12
6=(5-1)+2 where 5 and 2 are given
12=(7-1)+6
so (9-1)+12=20

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RAVI KUMAR   10 years AGO

odd terms 3+2=5
5+2=7,7+2=9
even
2+4=6,6+6=12
12+8=20
ans==20

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ANAND.K   10 years AGO

In the sequence, odd numbers are In order and even numbers are arranged in some order like ,2 omitting next number 4,then 6 then omitting in between two even numbers,hence when we omit three ewn numbers after 12,it will be 20

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Sanu Panji   10 years AGO

12+8

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Yuvaraju D   10 years AGO

from the series
3,5,7,9...
2,6,12,20......

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SWETHA BAPANAH K S   10 years AGO

3,2,5,6,7,12,9,?
Divide the series into parts as follows.
a. 3,5,7,9
b. 2,6,12,?
In the First series +2 is added successively.
In the Second Second series==>
2+4=6;
6+6=12;
12+8=20;
Here add the successive even numbers.

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Nikita Mulchandani   10 years AGO

Since,2+4=6
and 6+6=12
Therefore,12+8=20

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CHANDAN KUMAR   10 years AGO

3+2=5
5+2=7
7+2=9
2+4=6
6+6=12
12+8=20

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ramakrishnateja   10 years AGO

the given series is 3,2,5,6,7,12,9.....
the next number is 20. As alternately in the series 2+4=6,6+6=12,12+8=20.

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Chandra chur anand   10 years AGO

alternate it increase by
2 then 2+4=6 then 6+6=12 then 12+8=20 ans..

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khushboo goenka   10 years AGO

3 thn 5 thn 7
and 2nd series is 2 , 2+4,6+6,12+8

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sonu   10 years AGO

3, 2, 5, 6, 7, 12, 9, 20

it is the combination of two alternate series

series 1 : 3,5,7,9,11----> number added by 2
series 2 : 2,6,12,20 ----->number added are even no. series starting from 4 onwards

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pappu kumar priye   10 years AGO

2+4=6
6+6=12
12+8=20

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vignesh   10 years AGO

The alternate numbers are increasing in increasing multiple of two

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susanta   10 years AGO

2,6,12,20

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jayashree   10 years AGO

3+2=5,5+2=7,7+2=9
like wise take the alternate
2+4=6,6+6=12,12+8=20.

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shubham   10 years AGO

dedd

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Sandeep Kumar   10 years AGO

it is an order of +2 in alternate place (even places)

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Jamil Ahmed   10 years AGO

There are two alternate series. First 3, 5, 7, 9, ............ and the second 2, 6, 12, 20, 30. Hence 20 will be the next term.

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MRITUNJAY   10 years AGO

3,5,7,9....this is increasing with 2 each time
2,6,12....in this +4,+6,+8..
so the next number is 12+8=20.
3,2,5,6,7,12,9,20.that is 3rd is the answer

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ABHINAV PUSHPAM   10 years AGO

Alternate odd number is increased by 2 and even by 4,6 then 8. So 20 is answer

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Jay parmar   10 years AGO

odd digits are increasing with difference of 2
3,5,7,9....
even digit are increasing with difference of 4,6,8......
so 12+8=20
so option 3 is correct

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Yekollu Muneeswar   10 years AGO

This is a combination of two series
odd position series: 3,5,7,9,...adding 2 to the previous term
even position series: 2,6,12,20,30,...adding 4 then increment with 2 to each term.

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Tark Patel   10 years AGO

Two series are there...
3, 2, 5, 6, 7, 12, 9, .....
1st is -> 3 , ... , 5 , ... , 7 , ... , 9 , ...
2nd is -> ... , 2 , ... , 6 , ... , 12 , ... , ? (we have to find)

so in 2nd series pattern is n^2 + n
... , (1^2+1) , ... , (2^2+2) , ... , (3^2+3) , ... , (4^2+4) ,
so answer is 20.

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satyam sharma   10 years AGO

3+2=5
5+2=7
7+2=9
2+4=6,
6+6=12
12+8=20
so correct option is 3

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Meenakshi   10 years AGO

The following sequence consists of two series
3,_,5,_,7,_,9,_,11...(increase by 2)
2,_,6,_12,_,20(increase by even terms +4,+6,+8...)

The answer is:20

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amit kumar   10 years AGO

2+4=6
6+6=12
12+8=20

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BHASKAR MANDAL   10 years AGO

12+8 = 20

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Md.Sultan Khichi   10 years AGO

The series is like this
3,5,7,9 and 2,(2+4)=6,(6+6)=12,(12+8)=20.
So series become 3,2,5,6,7,12,9,20
Ans 20

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Satya B   10 years AGO

3,2,5,6,7,12,9, ?

it is an alternate series
3,5,7,9 is one series is formed by adding 2 to previous digits in the series and the second series is 2,6,12,... is formed by adding multiples of 2 from 4 to previous numbers in the series
2,2+4=6, 6+6=12,12+8=20

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Anubhav jain   10 years AGO

ODD PLACE ARE ADD2
EVEN PLACE ARE ADD INC. 2
3+2 =5 5+2= 7
2+4= 6 6+6 =12

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priti sagar   10 years AGO

there is 2 series here:
1st 3,5,7,9 where difference is 2.
2nd 2*1,2*3,2*6,2*10.where difference between multiplier is 2,3,4.....
so correct ans is 20 i.e c)20

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RAKESH   10 years AGO

(1+2), 1*2 , (2+3), 2*3, ..................., (4+5), 4*5

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Rishikesh Ranjan   10 years AGO

20

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PAWAN KUMAR   10 years AGO

The above series is two A.Ps.
In the first one,there is addition of 2.
In the second one, there is addition of AP.
i.e, 2+4 = 6
6+6 = 12
12+8 = 20. Ans.

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Ajinkya Kulkarni   10 years AGO

Ans 20
Stop giving such faltu problems

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varun Galar   10 years AGO

There are two series
3 5 7 9

6-2=4
12-6=6
20-12=8

above three has common diff. of 2

so the missing no is 20

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kiran   10 years AGO

1st ,3rd,5th and 7 th numbers are general odd numbers...for even place numbers2,6,12...2 next even 4 missed then 6. 6's next even 8,10 missed...12....12's next 3 even numbers 14,16,18 missed...so answer is 20

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Anjali   10 years AGO

two series
series 1: 3,5,7,9,...
series 2: 0+2=2
2+4=6
6+6=12
12+8=20 Ans

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S.SHAFI   10 years AGO

given series 3, 2, 5, 6, 7, 12, 9..

Series at odd places: 3, 5, 7, 9
Series at evenplaces: 2, 6, 12, ?

2 + 4 --> 6

6 + 6 --> 12

12 + 8 --> 20

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ayush bagga   10 years AGO

Here we have 2 series 1-3,5,7,9 & 2 series-2,6,12
Now we can see that the next no. will be from 2nd series bcoz the no.s are alternate as first from 1st sreies then 2nd series.
in the second series the gap between first 2 no.s is 4 and next 2 no.s is 6 so this is also forming an AP so the next gap should be 8 and the no. beccomes 20 and after that from the first series the no. become 11.

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abhishek   10 years AGO

3,5,7,9,11,13,.....
2,6,12,20,30,42,...

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Jayanta Dutta   10 years AGO

2+4=6
6+6=12
12+8=20

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Mithun Kumar Kesari   10 years AGO

20

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shree   10 years AGO

2+4=6, 6+6=12, 12+8=20

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MRITUNJAY KUMAR   10 years AGO

Option)3

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GUDDETI ANUPAMA   10 years AGO

2+4=6,6+6=12,12+8=20

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Vinay Sipani    10 years AGO

There is alternate sequence here

Consider odd terms i.e.1st, 3rd , 5th, ... terms
=> (3 , 5 , 7 , 9 ,...) which is a sequence with common difference 2

Consider the even terms i.e. 2nd , 4th , 6th ... terms
=> 2 , 6 , 12 ...
This is a sequence of sum of even numbers
2 , 2 + 4 , 2 + 4 + 6

So next term = 2 + 4 + 6 + 8 = 20

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Ashwin Dinesh   10 years AGO

guessed

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