1,11,21,1211,111221, ?
Find the next number in the series ?

• 312211
  11 tells that the previous number has one 1;;21 explains the previous no 11 has 2 ones(hence 21);;1211 tells that 21 has one 2 and 2 ones..similarly 11121 tells 1211 has 1 one,1 two and 2 ones..hence next will be 312211..i think
• 10 years agoHelpfull: Yes(46) No(7)
• ans:312211
  1
  11
  21
  1211
  111221
  312111
  13111231
  first no.implies quantity and second no.implies which digit
• 10 years agoHelpfull: Yes(13) No(5)
• the logic.
  1---------->wirte the number of occurences of a number sequntially foloewd by that number.
  therfore in series the digit 1 occurred only once and flloewd by which number occured once?i.e 1
  there fore 1-------->11
  11----->21 ie.number one occured twice.
  21------->1211 ie. 2 ocuured only once and so as 1
  1211------>111221
  111221------->312211 is the answer.
• 10 years agoHelpfull: Yes(4) No(1)
• ans is 312211,13112221 and so on....
  1st number is 1, 2nd number 11 represents tat 1 repeats 1 times so 11, 3rd represents tat 1 repeats 2 times,so series next series is 3 times 1,2 times 2,1 times 1... so next number is 312211
• 10 years agoHelpfull: Yes(3) No(3)
• 1 11 21 1211 111221
  take 11 21= exchange both term (21 11)= exchange first term(12 11)= 1211;
  take 21 1211=1211 21= 1112 21=111221
  take 1211 111221= 111221 1211= 221111 1211=2211111211
• 10 years agoHelpfull: Yes(2) No(2)
• 3122113.each number explains the previous number
• 10 years agoHelpfull: Yes(1) No(3)
• which it was explained
  
• 10 years agoHelpfull: Yes(0) No(2)
• 312211 ( 3 Times 1 is present so 31's and 2 Times 2 is present and so on.......)
  Finally ans :(312211)
• 8 years agoHelpfull: Yes(0) No(0)