Question

find the next number in series

1 , 11 , 21 , 1211 , 111211 , 311221

Justify the answer with reasoning.​

Answer 1

$\green{hey \: mate}$

$\bf \green {here \: ur \: answer }$
You have to speak out the previous member of the series......
1) first member -->1--->"1 one".
2) second member -->11--->"2 one".
3) third member--->21-->"1 two,1 one".
4) fourth member--->1211-->"1 one,1 two,2 one".
5) fifth member ----> 111211-->"1 three ,2one, 1 twos".
6) sixth member -->312211-->" 3 ones, 1 one, 2 twos ,1 twos ."
7) seventh member--->so we just do the same thing we did before" 3 ones, 1 twos,2 three and 1 ones.
13112221 is ur answer.

$\boxed { \fcolorbox{white}{pink}{please \: mark \: as \: brilliant}}$

Answer 2

13112221 is the next series of the number

1st number one = 1

2nd number 11= two one 1

3rd number 21= 1 two 1 one

4th number 1211=1 one 1 ,1 two ,2 one

5th number 111211= 1 three 2 one,1 two

6th number 312211 = 3 ones 1 one 2 twos 1 two

7th number also same...like this patterm

Hope u seful