Critical Thinking Puzzles: 1, 2, 6, 42, 1806, ?

June 8, 2009

Find the next number in the series...

Lisa said...: 3,263,442; June 8, 2009 at 5:06 PM
Secret Squïrrel said...: If each number in the series is multiplied by the next odd number then the answer is (1806*1807) = 3,263,442.

However, if each number in the series is multiplied by the next prime number then the answer is (1806*1811) = 3,270,666; June 9, 2009 at 4:59 PM
Karthikeyan said...: 3263442.

1*1+1, 2*2+2, 6*6+6, 42*42+42, 1806*1806+1806; June 18, 2009 at 9:09 PM
Rosaiah said...: after 1,2 u will get 3 ..learn digits first and come and crete puzzles. YOu come to assembly i will teach you 1,2,3; June 22, 2009 at 8:27 PM
addicted to life said...: 3 263 442

yeah! i did it ;); July 23, 2009 at 7:13 PM
Widad said...: Secret Squïrrel, the next ODD number, IS the next number (since all your answers will be even) and IS the next PRIME number (in this case).

Anyway you look at it, you will get the same answer.
(1806*1807) = 3,263,442

1807
- is the next number after 1806
- is the next odd number
- is the next prime number; October 15, 2009 at 12:52 AM
Anonymous said...: 1807 is NOT prime. 13*139=1807

So as Lisa originally said, there are two solutions to this puzzle depending of if you use the next number, or the next prime number.; January 19, 2010 at 9:47 AM
Anonymous said...: 3263442; October 24, 2011 at 11:56 PM