Special Tricks for CAT 2012

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Well last year also same type of a thread was started by a fellow puy but dat was very late jus 10 days prior to the beginning of CAT ...so it wldn't have helped every1...so with roughly 80 days to go to CAT...it's tym to kno some useful tricks da...
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you guys are already posting in the thread and asking where is the thread moved???


is this a new way to troll??
You learn more from failures than from success. Don't let it stop you. FAILURE BUILDS CHARACTER.
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where it is moved?

Business Management 2013-15 | Shadow Member | IlluminatiX | Media & PR Cell, XIMB
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paste the url where it is moved ?

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paste the link where it is moved ?

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moving the thread to prep resources section.

www.raghavabbhi.com | My take on CAT: http://www.pagalguy.com/discussions/all-i-wanted-to-speak-about-cat-25002933/6315307
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Guys common in...its an important last phase...i wld do it in a while..a lil busy..

Its more important to have extraordinary dreams than trying to become an extraordinary person.
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" COPY AND PASTE FROM LAST YEAR'S THREAD "
Some painted cube funda

We assume the cube is divided into n^3 small cubes.

no. of small cubes with ONLY 3 sides painted : 8( all the corner cubes )

no. of small cubes with ONLY 2 sides painted :

A cube is painted on 2 sides means, it is on the edge of the bigger cube ,and we have 12 edges, each having n cubes. but since the corner cubes are painted on 3 sides, we need to neglect them. so in effect, for each side we will have (n-2) small cubes with only 2 sides painted.
thus, then number is, 12 * (n-2)

no of small cubes with ONLY 1 side painted :

for each face of the cube ( 6 faces ) we have (n-2)^2 small cubes with only one side painted. and we have 6 faces in total.
so th number is, 6*(n-2)^2

no of small cubes with NO sides painted :

if we remove the top layer of small cubes from the big cube we will end up a chunk of small cubes with no sides painted.
this number will be equal to, (n-2)^3.

Also, remember for Cuboids with all different sizes, the following are the results:

a x b x c (All lengths different)

Three faces - 8 (all the corner small cubes of the cuboid)

Two faces - There are two (a-2) units of small cubes on one face of the cuboid and there is a pair of such faces. Hence, number of such small cubes corresponding dimension a of the cuboid = 4(a-2).

Similarly, for others.

So, total with two faces painted = 4(a - 2) + 4(b - 2) + 4(c - 2)

One face - Since each face of the cuboid is a combination two different dimensions, hence for the face which is a combination of a and b dimensions, the number of small cubes is 2* (a-2)(b-2)

Similarly, for others.

So, total with one face painted = 2(a - 2)(b - 2) + 2(a - 2)(c - 2) + 2(b - 2)(c - 2)

Zero faces - The entire volume of small cubes except for two cubes in each of the rows and columns will not be painted at all. hence this is the simplest ...

(a - 2)(b - 2)(c - 2)

You can put different integer values for number of small cubes producing different edge lengths of cuboid to get varied results.

To verify for a cube, put a=b=c=L, you get

Three faces - 8
Two faces - 12(L - 2)
One face - 6(L - 2)^2
Zero faces - (L - 2)^3
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hey ... please update with the tricks

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Well last year also same type of a thread was started by a fellow puy but dat was very late jus 10 days prior to the beginning of CAT ...so it wldn't have helped every1...so with roughly 80 days to go to CAT...it's tym to kno some useful tricks dat will help all in cracking CAT...

So puys post some useful tricks from all the topics QA, DI, VA and LR


PS: make sure only tricks...no big concepts...no questns to b posted only doubts reltd to the tricks to b asked...
luking for everyones cooperation
One last thing before u post any thing...on the top ryte down in bold nd caps from which section it is and wat is the topic in brief...so it is easy for every1 to understand...
Its more important to have extraordinary dreams than trying to become an extraordinary person.
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