Sequence

Written on 5:39 am by Vja Students

Consider the sequence

1 11 21 1211 111221 312211 13112221 1113213211 31131211131221 13211311123113112211......

What number in this sequence is the first to include a 4 ?

Answere:
This sequence would never include the term '4'

Every next number describes the previous number1

11 (describes that there is a single '1' in the previous number)

21 (describes there are two 1's in the previous number)

1211 (describes there is a single 2, and a single 1 in the previous number)....and so on

For a '4' to be included, u will need to have 4 consecutive same digits. This is not possible in this sequence

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