Try Breaking This Series

Number Theory Level 2

This Problem On Series Is Not Much Related With Mathematics But You'll Find It Interesting....

Solve This Series... And Find The Next Term In The Series....

1 , 11 , 21 , 1211 , 111221 , 312211 , _ _ _ _ .......????


The answer is 13112221.

Ram Mohan Madhamanchi by Ram Mohan Madhamanchi , 24, India

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

1 solution

Nick Okita
Aug 2, 2014

It's not that hard actually. If you read the number whole number by each digit you may find the logic.

  • 1 - One
  • 11 - One one (1)
  • 21 - Two ones (11)
  • 1211 - One two, one one (21)
  • 111221 - One one, one two, two ones (1211)
  • 312211 - Three ones, two twos, one one (111221)

So next one would be: One three, one one, two twos and two ones, therefore: 13112221 \boxed{13112221}

1 Helpful 0 Interesting 0 Brilliant 0 Confused

It is called the Look-and-Say sequence (invented by Conway)

Théo Leblanc - 1 year, 10 months ago

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...