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4B 5A 6 .
E 5D C
. 6 × 5 × 4 ×1× 5 = 600
. 600 + 1920 + 600 = 3120
: 7 [AMC10A 2010] ( )
.
.7
.
. 3 × 3 × 3 × 3 × 3 × 3 × 3 = 37
. R∪B BR
.
.
R ∪ B = R + B − R ∩ B = 27 + 27 − 1 = 28 − 1
37 − (28 − 1) = 2187 − 256 + 1 = 1932
10 [AMC10A 2008] ( .
)
.1