Brain Teaser SMS



Here is a series of numbers. What is the next number in the sequence?
1
11
21
1211
111221
312211
13112221

Answer: The next number in the sequence is 1113213211, because the rule for creating the next number is to simply describe the previous number. The first number is 1, or 1 (one) 1, so you get 11. To describe 11, you have two 1′s, or 21. Now you have one 2 and one 1, so the next number is 1211. The solution is to simply continue describing the previous number using only numbers.


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