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Devious Kinder Blocks (Posted on 2008-06-18) Difficulty: 3 of 5
For integral unit increments of x, what equation generates the values of y which are represented in the blocks?

Avoid the obvious.

3
10
21
36


Hint:
The trick works with Internet Explorer, Firefox and Opera but Opera may behave a little differently to mouse explorations; oh, concentrate on the higher part of each block.

See The Solution Submitted by brianjn    
Rating: 4.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Some Thoughts A sequential look.... | Comment 1 of 8

If this was not in Tricks, but in Sequences, I would say since A is the first letter, it has a value of 1, and so on; we then assign A, and so forth, the new value represented and as follows: 

A =     3 + 4*(A-1) =  0 + 3 + 4*(1-1) = 3
B
= A + 3 + 4*(B-1) =  3 + 3 + 4*(2-1) = 10
C
= B + 3 + 4*(C-1) = 10 + 3 + 4*(3-1) = 21
D
= C + 3 + 4*(D-1) = 21 + 3 + 4*(4-1) = 36
...
E = D + 3 + 4*(E-1) = 36 + 3 + 4*(5-1) = 55
F
= E + 3 + 4*(F-1) = 55 + 3 + 4*(6-1) = 78
etc....


As it is, I am not sure what the trick is.


  Posted by Dej Mar on 2008-06-18 17:01:02
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