Correct Answer: 1113122110 In given series 2nd number gives number of which digits present in the 1st number and so on continues for 3rd ,4th, Here 1st no has only one zero, so 2nd no is 10 and 2nd no has one 1 and one 0,so 3rd no is 1110, so like that 5th no has one 1,one 3,one 2,two 1's and one 0So the next no is 1113122110