Comments on: The Brain Teaser Solution

By: ramsha

ramsha — Fri, 30 Dec 2011 21:30:47 +0000

Sagar — Sat, 24 Dec 2011 04:36:12 +0000

Jeff — Sun, 03 Apr 2011 22:27:47 +0000

the first two terms are irrelevant. The final numbers follow the pattern that the first
10 = 2*5
21 = 3*7
36 = 4*9
55 = 5*11
?? = 6*13 = 78

Add one to the left increasing multiplier and two to the second.

d'zulia — Sat, 02 Apr 2011 06:22:15 +0000

Georgios — Sat, 05 Feb 2011 09:33:05 +0000

its a^2+b^2-b=c
2^2+3^2-3=10
3^2+4^2-4=21
…………
6^2+7^2-7=78

Marwa — Wed, 26 Jan 2011 21:19:23 +0000

Migz — Sat, 03 Apr 2010 11:44:30 +0000

2*3=6+2^2=10
3*4=12+3^2=21
4*5=20+4^2=36
5*6=30+5^2=55
6*7=42+6^2=78