+0  
 
+1
55
2
avatar+67 

 

In the arrangement below, each number is the non-negative difference of the two numbers above it to which it is attached. What is the sum of the four greatest distinct possible values for z?

hellospeedmind  Sep 30, 2018
 #1
avatar+67 
+1

I think the answer is 448. Can someone check for me?

hellospeedmind  Sep 30, 2018
 #2
avatar+27032 
+1

I agree:

 

w can only be 6

 

x can be 22  or  34

 

x = 22:  y can be 14 or  58        x = 34: y can be 2 or 70

 

y = 14: z can be 62 or 90      y = 58: z can be 18 or 134

y = 2:  z can be 74 or 78       y = 70: z can be  6 or 146

 

Four greatest values of z are 78, 90, 134, 146

 

78+90+134+146 = 448

Alan  Sep 30, 2018

34 Online Users

avatar
avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.