Comments on: Pattern Recognition Brain Teaser – The Empty Triangle

By: steve

steve — Sun, 01 Nov 2009 18:41:10 +0000

oops, I guess theresa already thought of that one.

By: steve

steve — Sun, 01 Nov 2009 18:40:23 +0000

1) (6×2)-(2×2)=8
2) (7×3)-(5×3)=6
3) (7×2)-(4×2)=6
4) (6×3)-(5×3)=3!

By: Theresa

Theresa — Sat, 31 Jan 2009 06:36:11 +0000

Wow, this works at least 3 other ways. Other people mentioned two already but i found it another way.. which actually someone wrote too.

1st – 6*2 – 2*2
3rd – 7*3 – 3*5 = 3

Its so funny that it is that open to interpretation.

By: jumbo

jumbo — Thu, 16 Oct 2008 14:55:05 +0000

correct answer is 3

In 1st triangle :6*2-2*2 =inside number

In 2nd triangle :7*3-3*5 =inside number
same for 3rd triangle
hence in last triangle number is 3

By: Truck

Truck — Thu, 16 Oct 2008 13:22:53 +0000

I get 2 as (7-5)*3 – 4 = 2

By: Zobi

Zobi — Thu, 16 Oct 2008 13:21:54 +0000

I get 1

By: Lmnop

Lmnop — Wed, 18 Jun 2008 23:44:39 +0000

After checking the way you were “supposed” to get to the answer, I found out I did it the “wrong” way. I did it the same way as zeda. I suppose the other way would have been quicker; oh well.

By: Lmnop

Lmnop — Wed, 18 Jun 2008 23:41:48 +0000

I haven’t checked the answer yet, but I’m going to go ahead and say that it’s 3.

By: Richard

Richard — Sat, 10 May 2008 04:13:40 +0000

Answer to

1 3 5 7 9 R
whelmint

By: sudhasini

sudhasini — Tue, 08 Apr 2008 11:23:49 +0000

answer is 3

IN first traingle 8/2=4
add 2 with 4 =6.
IN second one
6/3=2+5=7
IN 3rd triangle
6/2=3+4=7
IN 4th triangle
3/3=1+5=6