number theory
Number Theory
Level
2
What is the next number in the sequence? 1 11 21 1211 111221 312211
The answer is 13112221.
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1 solution
The sequence follows a nice pattern. 1 11 = one one of the previous term 21= two ones of 11 1211=one 'two' one'one' of 21 111221=one '1' one '2' two'1' of 1211 312211 =three '1' two '2' one '1' of 111221
SO THE NEXT TERM IS 13112221.
THIS SOLUTION IS PROPSED BY MY DAUGHTER ANAGHA I NAIR , AGE 14 anaghai2000