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HAVE picture, a cube " ABCDEFGH ", ask the value of angle

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Manager
Manager
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Joined: 27 Jul 2003
Posts: 124
Location: Singapore
Followers: 1

Kudos [?]: 10 [0], given: 0

HAVE picture, a cube " ABCDEFGH ", ask the value of angle [#permalink] New post 05 Oct 2003, 23:15
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
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1. HAVE picture, a cube " ABCDEFGH ", ask the value of angle BEG,
the BE, EG, BG is the diagonal of three adjacent surface of the cube:

2. Five letters: G, D, I, I, F form some strings such as GDIIF OR
DGIFI, how many strings there are if there is at least a letters
between the two letters I?
SVP
SVP
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Joined: 03 Feb 2003
Posts: 1607
Followers: 6

Kudos [?]: 95 [0], given: 0

 [#permalink] New post 05 Oct 2003, 23:27
(2) total—wrong (both Is come together)

T=5!/2!=60
W=4!=24

60-24=36

(1) since it is a cube, all its surface diagonals are equeal, so the triangle BEG is equilateral, so BEG=60
  [#permalink] 05 Oct 2003, 23:27
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HAVE picture, a cube " ABCDEFGH ", ask the value of angle

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