Latest Google Aptitude Question SOLUTION: 1,11,21,_ what comes in the next series.

• Placement Papers
• /
• Google
• /
• Logical Reasoning
• /
• Number Series

Google Question Papers: GOOGLE Company Profile

(#M40085317) GOOGLE Logical Reasoning question solve below this problem Keep an EYE

1,11,21,_ what comes in the next series.

Asked In Google jyotheswar (9 years ago)

Solved SHOBANA V Read Solution (70)

Is this Puzzle helpful?   (45)   (18) Submit Your Solution Number Series

Read Solution (70) :

Santosh Kumar  (9 years ago)

31
1+10=11
11+10=21
21+10=31

Is this solution Helpfull? Yes (8) | No   

SHOBANA V  (8 years ago) Best Solution

the next num in the series is 1211

Is this solution Helpfull? Yes (8) | No (2)  

Pritish Nayak  (8 years ago)

there are two possible answer to the question...
1. 31 as common difference is 10
2. 1211.. current number defines the previous number out of which 1st number say the no. digit and 2nd the digit itself... for eg. 2nd number say there is only one 1 in 1st number, similarly 3rd number says there are 2 1s in 2nd number, 4rth number will say there are that there is one 2 and one 1 in 3rd number i.e. 1211, 5th will say there are one 1 one 2 and two 1.. i.e 111221, 6th= three 1, two 2, one 1=312211 and so on... so the series will be 1,11,21,1211,111221,312211,13112221,1113213211,31131211131221,....... and so on
thank you

Is this solution Helpfull? Yes (7) | No   

Nikita Verma  (8 years ago)

Ans- 1211
The first no. is 1
The second is 11 which tells that there is one 1
The third is 21 which tells that there are two 1s
therefore the next no. should be 1211

Is this solution Helpfull? Yes (5) | No (3)  

SHAHEEN  (9 years ago)

ANS IS 31
Y BCOZ
THE COMMON DIFFERENCE BETWEEN THE TERMS IS 10

Is this solution Helpfull? Yes (3) | No   

Santosh Yadav  (9 years ago)

31...............

Is this solution Helpfull? Yes (1) | No   

Aditi Khandagale  (9 years ago)

sorry actually the answer will be 31

Is this solution Helpfull? Yes (1) | No   

mithunkumar  (8 years ago)

1
11 one time 1 is there
21 two times 1 is there
1211 one time 2 and then one time 1

Is this solution Helpfull? Yes (1) | No   

jyotsna kumari  (9 years ago)

1+10=11,11+10=21 so 21+10=31

ans:31

Is this solution Helpfull? Yes | No   

Parag Raj Ahivale  (9 years ago)

1+10=11,11+10=21,21+10=31

Ans:31

Is this solution Helpfull? Yes | No   

pappu kumar priye  (9 years ago)

1+10=11,11+10=21,21+10=31

Is this solution Helpfull? Yes | No   

Ajitha  (9 years ago)

1+10=11,11+10=21,21+10=31

ans=31

Is this solution Helpfull? Yes | No   

VARUNKANNAN  (9 years ago)

0+1=1, 1+1=11, 2+1=21, 3+1=31.
ans = 31

Is this solution Helpfull? Yes | No   

pooja  (9 years ago)

1
1+10=11
11+10=21
21+10=31
ans 31

Is this solution Helpfull? Yes | No   

Monica Joshi  (9 years ago)

31, add 10 at each step to get next term

Is this solution Helpfull? Yes | No   

Aditi Khandagale  (9 years ago)

the answer will be -10
because
1-11=-10
21-11=-10

Is this solution Helpfull? Yes | No (3)  

divya  (8 years ago)

31.
each number have 10 difference

Is this solution Helpfull? Yes | No   

sri poojitha  (8 years ago)

1+10=11
11+10=21
21+10=31

Is this solution Helpfull? Yes | No   

abhishek raj  (8 years ago)

1+10=11
11+10=21
now 21+10=31
so....31 is the write answer

Is this solution Helpfull? Yes | No   

preeti kumbhaj  (8 years ago)

31
11-1=10
21-11=10

Is this solution Helpfull? Yes | No   

bindu murthy  (8 years ago)

31
1+10=11
11+10=21
21+10=31

Is this solution Helpfull? Yes | No   

Ganapati  (8 years ago)

difference between successive terms is 10 , so answer will be 31

Is this solution Helpfull? Yes | No   

madhuri  (8 years ago)

31 ,1+10=11,11+10=21,21+10=31.........

Is this solution Helpfull? Yes | No   

anish  (8 years ago)

31
sum up the digts

Is this solution Helpfull? Yes | No   

IYTHA VENKATA RAMAIAH  (8 years ago)

31,difference b/w any two numbers is 10

Is this solution Helpfull? Yes | No   

A janani hariprasad  (8 years ago)

answer is 31.

Is this solution Helpfull? Yes | No   

jaya  (8 years ago)

1, 10+1 , 20+1 , 30+1=31

Is this solution Helpfull? Yes | No   

velmala gangadhar  (8 years ago)

31..
1+10=11
11+10=21.
21+10=31..

Is this solution Helpfull? Yes | No   

MSS487  (8 years ago)

1,1_1,2_1,.....according to this 1's remains same throughout
so ans is 31

Is this solution Helpfull? Yes | No   

Deepak Kumar  (8 years ago)

ans. is 31

Is this solution Helpfull? Yes | No   

Chilakapati Prabhu Das  (8 years ago)

31 because common difference ids 10

Is this solution Helpfull? Yes | No   

naveen  (8 years ago)

31.......................................................

Is this solution Helpfull? Yes | No   

Deepak Patel  (8 years ago)

some no. should also be in series ...because it contain two or more answer.......

Is this solution Helpfull? Yes | No   

lalit kumar  (8 years ago)

31
1+10=11
11+10=21
21+10=31

Is this solution Helpfull? Yes | No   

garipally mahathi  (8 years ago)

31 diff is 10

Is this solution Helpfull? Yes | No   

jyotheswar  (8 years ago)

31
1+10=11
11+10=21
21+10=31

Is this solution Helpfull? Yes | No   

PERUMALLA RAJU  (8 years ago)

01
11
21
IN 1'S DIGIT NO 1 IS CONSTANT
BUT 10'S DIGIT DIFF IS 1 SO NEXT NO IS 31

Is this solution Helpfull? Yes | No   

Purbasha  (8 years ago)

as there is a diff of 10
so the ans will be 31

Is this solution Helpfull? Yes | No   

Mosin mahajan  (8 years ago)

there is a difference of 10 between the series elements i.e.(11-1=10) and (21-11=10)
therefore,next term after 21 would be(21+10=31)

Is this solution Helpfull? Yes | No   

Alla.Durga Sravani  (8 years ago)

31
difference between 1 &11 is 10 and 21&11 is also 10.So next number should be 31

Is this solution Helpfull? Yes | No   

suman   (7 years ago)

sine 1+10=11
and 11+10=21
so 21+10=31

Is this solution Helpfull? Yes | No   

Krunal M Mendapara  (7 years ago)

1+10=11
11+10=21
21+10=31

Is this solution Helpfull? Yes | No   

Himavarsha  (7 years ago)

31 is the answer y becz in the series if we observe the difference b/w each number is 10. so 21+10=31.

Is this solution Helpfull? Yes | No   

keerti dodamani  (7 years ago)

1211
because the series says 1, 1 times 1,2 times 1,so next is 1 times 2 an 1 times 1

Is this solution Helpfull? Yes | No   

akula akhila  (7 years ago)

the difference btw series is 10
answer is 31

Is this solution Helpfull? Yes | No   

amit yadav  (7 years ago)

31,add 10 in next

Is this solution Helpfull? Yes | No   

palak Jain  (7 years ago)

here,here,11-1=10
and 21-11=10
so next no 21+10=31

Is this solution Helpfull? Yes | No   

Dev Tolad  (7 years ago)

31

difference is 10

Is this solution Helpfull? Yes | No   

vinay kumar  (7 years ago)

Ans is 31 1,1+10,1+20

Is this solution Helpfull? Yes | No   

manisha mishra  (7 years ago)

31 as the difference is 10 from first no. to second no. and so on as the third no.

Is this solution Helpfull? Yes | No   

Ashfak Ahmad  (7 years ago)

1 to 11 t0 21 then 31

Is this solution Helpfull? Yes | No   

rishika  (6 years ago)

1, 11, 21, 31, 41...

Is this solution Helpfull? Yes | No   

HARIKA  (6 years ago)

ans:31
the difference between the two adjacent numbers is 10

Is this solution Helpfull? Yes | No   

HARIKA  (6 years ago)

ans:31
the difference between the numbers is 10.

Is this solution Helpfull? Yes | No   

nandhini  (6 years ago)

difference is 11 next series is 31

Is this solution Helpfull? Yes | No   

thirupathamma  (5 years ago)

adding 10 to the result each time..then we get the required series.such as
difference between 1 and 11 is 10
difference between 11 and 21 is 10
so the difference between the 21 and the next number should be 10
so,21+10=31.

Is this solution Helpfull? Yes | No   

  (5 years ago)

31
for thier every numer is incremented by 10

Is this solution Helpfull? Yes | No   

Hima Bindu Kandepu  (5 years ago)

31
reason:difference between the two numbers is 10

Is this solution Helpfull? Yes | No   

kunnu  (5 years ago)

ans is 31 because
lets a1=1
a2=11
a2=21
and then difference between a2-a1=10
similarly a3-a2=10
hence difference between a4-a3=10
so it means we need to add 10 in a3=21+10=31

Is this solution Helpfull? Yes | No   

rizwana shaik  (5 years ago)

1+10=11
11+10=21
21+10=31

Is this solution Helpfull? Yes | No   

M.V.N.D.KIRMANI  (5 years ago)

31
1+10=11
11+10=21
21+10=31

Is this solution Helpfull? Yes | No   

samiraja M  (5 years ago)

31
continious substraction

Is this solution Helpfull? Yes | No   

Laxmi Narayana2000  (4 years ago)

ans: 1121
two possibilities are there and hence it's a google interview question the answer would not be 31.
1,11,21,?
1= one
11= one one i.e., in previous thing there is only "one one".
21 = two one's i.e., in previous thing there are "two 1's".
? = in previous thing there is "one 2 and one 1" hence answer is: 1211
so...
1,11,21,1211,?
here ? is: 111221 (pronounce the previous occurrence of digits)

Is this solution Helpfull? Yes | No   

Aditya Singh Chandel  (4 years ago)

1,11,21
01,(0+1)1,(0+1+1)1
so the anser is 31

Is this solution Helpfull? Yes | No   

Keerthna K  (4 years ago)

1+10=11,11+10=21,21+10=31
Answer:31

Is this solution Helpfull? Yes | No   

Anmol Arora  (4 years ago)

Answer is 1211.

Is this solution Helpfull? Yes | No   

abhishek  (3 years ago)

1,1+10=11,11+10=21,21+10=31

Is this solution Helpfull? Yes | No   

Nandish Gohel  (3 years ago)

the ans is 1211

Is this solution Helpfull? Yes | No   

Roobini  (3 years ago)

1,11,21,31,41,.....

add 10 to each number

Is this solution Helpfull? Yes | No   

oliviaprakash@gmail.com  (1 year ago)

31 10+1,11+1,21+10-=31

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.