MathDB
Problems
Contests
National and Regional Contests
China Contests
(China) National High School Mathematics League
2023 China Second Round
7
7
Part of
2023 China Second Round
Problems
(1)
throw a Dice three times
Source: 2023 China Second Round Test 1 P3
6/2/2024
We throw a dice three times and the numbers are
x
,
y
,
z
x,y,z
x
,
y
,
z
find out the possibility of
(
7
x
)
<
(
7
y
)
<
(
7
z
)
\binom{7}{x}<\binom{7}{y}<\binom{7}{z}
(
x
7
)
<
(
y
7
)
<
(
z
7
)
possibility
Dice