sequence prob

This topic has expert replies
Legendary Member
Posts: 1159
Joined: Wed Apr 16, 2008 10:35 pm
Thanked: 56 times

sequence prob

by raunekk » Thu Feb 05, 2009 11:09 pm
Can anyone help me to bring this sequence in the variable form...


sequence: 1,2,6,42,1806,3263442...

Its the product of the number and the next consecutive number,,,,


anyone??
Source: — Problem Solving |

Junior | Next Rank: 30 Posts
Posts: 21
Joined: Thu May 29, 2008 8:14 am
Location: France
Thanked: 1 times

My understanding

by alto34 » Fri Feb 06, 2009 12:44 am
Hi,

1
1^2 + 1 = 2
2^2 + 2 = 6
6^2 + 6 = 42
42^2 + 42 = 1806
...

So (n+1) = n^2 + n

Is it an official GMAT question?

Thomas
really want to beat the GMAT

Legendary Member
Posts: 1159
Joined: Wed Apr 16, 2008 10:35 pm
Thanked: 56 times

by raunekk » Fri Feb 06, 2009 9:38 am
no its not an official question,,