1. ## number pyramid

Hello all,

I am new to the site and hope to interact with you all soon as I am starting to love math puzzles. So there are two pyramids like things. I've solved the second in case it helps with the first.
2
|
?-28-?

|
4-?-3

4
|
10-?-9
|
?-?-5

spoiler for second
Mid 34 bottom 6 and 11

2. ## Re: number pyramid

Code:
       4
10    a    9
b    c    5

4
10   34    9
6   11    5
Okkkkk...so seems that given is a lonely number at top,
then 3 numbers somewhere in a 2nd and 3rd row of 3
numbers per row, leaving 3 numbers a,b,c to be found.

You solved above: a=34, b=6 and c=11

But what "rules" did you use?
You've given nothing to work with...
Is this a standard puzzle that everyone should know?

3. ## Re: number pyramid

It's from this game Strangest Island Escape. When comparing the two pyramids I think I just accidentally got the answer. I started with the premise the the second pyramid's c would start with 11 because 9, 10, 11, then 6 plus 5 equals 11, then add 9, 10 and 4 = 34. However, the same logic does not work for the first pyramid i.e. a=9, b=8, c=7. What's more 9 + 8 + 7 + 2 = 26, not 28. Also, a = 10, b = 9, c = 7 while all plus 2 = 28 this does not work either Neither does a = 9, b = 8, c = 9
So I started thinking that the numbers surrounding 28 should add up to equal 28. I went through a lot of iterations though. I'm really not sure where to go from here.

I think the answer lies somewhere in the comparison between the two
Notice where Pyramid 2 has
4
- - -
6 - 5
and
-
10 - 9
- 11 -

I think this pattern should be used for pyramid one.
because of
2
- - -
4 - 3

4. ## Re: number pyramid

Take over Dan....I got a headache...

5. ## Re: number pyramid

erghh. I've been trying to figure this out for a couple months now