Shape and space?Watch

#1
I've been stuck on this question and can't really visualise the answer. Could anybody give me any guidance?
0
4 years ago
#2
(Original post by Peanut247)
I've been stuck on this question and can't really visualise the answer. Could anybody give me any guidance?
as a start the middle section has 14 cylinders out of the 18 (3 x 6) you started with.

have you got that far?
0
4 years ago
#3
I haven't managed to work this out completely but here's what I've got.

Firstly, let's get a coordinate system going so we know what we're on about. We'll call the columns from left to right 1 to 6 and the rows from bottom to top A to C. Then, because columns 1, 2, 5 and 6 only have one tower of blocks in them, the side view from X is showing you how many blocks are in each tower in those particular columns. Using this information we know there must be 14 blocks shared between columns 3 and 4.

I hope that helps!

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0
4 years ago
#4
(Original post by Peanut247)
I've been stuck on this question and can't really visualise the answer. Could anybody give me any guidance?

(Original post by TeeEm)
as a start the middle section has 14 cylinders out of the 18 (3 x 6) you started with.

have you got that far?

continuing from my previous post there are only .... ways you can make up 14 using the numbers 1,2 and 3

One of them is 1+1+3+3+3+3

continue from there
0
4 years ago
#5
(Original post by Peanut247)
..

Top right two and bottom left two columns clearly have 6 of the 20.

Since all 6 central columns are present, the bottom row of those central 6 take 6 cylinders.

This leaves 20-6-6 = 8 cans to allocate.

Now looking from the end, for each option consider the maximum and minimum number of cans that can go into those central two rows to produce that configuration.
#6
(Original post by TeeEm)
as a start the middle section has 14 cylinders out of the 18 (3 x 6) you started with.

have you got that far?
How do
you know that?
0
4 years ago
#7
(Original post by Peanut247)
How do
you know that?
look at the " art" as viewed from X

the two "wings" as viewed from above are both single rows

so what you see from X is really what is there, i.e 6 cylinders since there is nothing hidden behind them

20 - 6 =14

so "middle" section as viewed fro above has 14

next look my hint at post 4
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