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

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(#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 (10 years ago)

Solved SHOBANA V Read Solution (71)

Is this Puzzle helpful?   (48)   (18) Submit Your Solution Number Series

Read Solution (71) :

Santosh Kumar  (10 years ago)

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

Is this solution Helpfull? Yes (8) | No   

SHOBANA V  (9 years ago) Best Solution

the next num in the series is 1211

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

Pritish Nayak  (9 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

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Nikita Verma  (9 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  (10 years ago)

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

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Santosh Yadav  (10 years ago)

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

Is this solution Helpfull? Yes (1) | No   

Aditi Khandagale  (10 years ago)

sorry actually the answer will be 31

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mithunkumar  (9 years ago)

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

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jyotsna kumari  (10 years ago)

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

ans:31

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Parag Raj Ahivale  (10 years ago)

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

Ans:31

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pappu kumar priye  (10 years ago)

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

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Ajitha  (10 years ago)

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

ans=31

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VARUNKANNAN  (10 years ago)

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

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pooja  (10 years ago)

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

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Monica Joshi  (10 years ago)

31, add 10 at each step to get next term

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Aditi Khandagale  (10 years ago)

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

Is this solution Helpfull? Yes | No (3)  

divya  (9 years ago)

31.
each number have 10 difference

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sri poojitha  (9 years ago)

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

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abhishek raj  (9 years ago)

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

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preeti kumbhaj  (9 years ago)

31
11-1=10
21-11=10

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bindu murthy  (9 years ago)

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

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Ganapati  (9 years ago)

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

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madhuri  (9 years ago)

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

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anish  (9 years ago)

31
sum up the digts

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IYTHA VENKATA RAMAIAH  (9 years ago)

31,difference b/w any two numbers is 10

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A janani hariprasad  (9 years ago)

answer is 31.

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jaya  (9 years ago)

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

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velmala gangadhar  (9 years ago)

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

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MSS487  (9 years ago)

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

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Deepak Kumar  (9 years ago)

ans. is 31

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Chilakapati Prabhu Das  (9 years ago)

31 because common difference ids 10

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naveen  (9 years ago)

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

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Deepak Patel  (9 years ago)

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

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lalit kumar  (9 years ago)

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

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garipally mahathi  (9 years ago)

31 diff is 10

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jyotheswar  (9 years ago)

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

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PERUMALLA RAJU  (9 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

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Purbasha  (9 years ago)

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

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Mosin mahajan  (9 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)

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Alla.Durga Sravani  (9 years ago)

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

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suman   (8 years ago)

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

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Krunal M Mendapara  (8 years ago)

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

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Himavarsha  (8 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.

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keerti dodamani  (8 years ago)

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

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akula akhila  (8 years ago)

the difference btw series is 10
answer is 31

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amit yadav  (8 years ago)

31,add 10 in next

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palak Jain  (8 years ago)

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

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Dev Tolad  (8 years ago)

31

difference is 10

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vinay kumar  (8 years ago)

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

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manisha mishra  (8 years ago)

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

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Ashfak Ahmad  (7 years ago)

1 to 11 t0 21 then 31

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rishika  (7 years ago)

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

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HARIKA  (7 years ago)

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

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HARIKA  (7 years ago)

ans:31
the difference between the numbers is 10.

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nandhini  (6 years ago)

difference is 11 next series is 31

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thirupathamma  (6 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.

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  (6 years ago)

31
for thier every numer is incremented by 10

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Hima Bindu Kandepu  (6 years ago)

31
reason:difference between the two numbers is 10

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kunnu  (6 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

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rizwana shaik  (6 years ago)

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

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M.V.N.D.KIRMANI  (6 years ago)

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

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samiraja M  (6 years ago)

31
continious substraction

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Laxmi Narayana2000  (5 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)

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Aditya Singh Chandel  (5 years ago)

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

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Keerthna K  (5 years ago)

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

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Anmol Arora  (5 years ago)

Answer is 1211.

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abhishek  (4 years ago)

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

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Nandish Gohel  (4 years ago)

the ans is 1211

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Roobini  (4 years ago)

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

add 10 to each number

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oliviaprakash@gmail.com  (2 years ago)

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

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Sudha  (2 Months ago)

There is an addition of +10 so when we adda 10 to the number 21 it will make 31

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