3 |
4 |
4 |
5 |
3 |
4 |
4 |
5 |
. |
B |
. |
B |
3 |
4 |
4 |
5 |
3 |
20 |
C | k2 |
3 |
4 |
1 |
4 |
C | l2 |
4 |
5 |
1 |
5 |
1 |
4 |
1 |
5 |
C | 12 |
3 |
4 |
1 |
4 |
C | 23 |
4 |
5 |
1 |
5 |
C | 22 |
3 |
4 |
C | 22 |
4 |
5 |
1 |
16 |
1 |
25 |
3 |
4 |
4 |
25 |
9 |
16 |
16 |
25 |
193 |
400 |
A.1-a-b | B.1-a•b | C.(1-a)•(1-b) | D.1-(1-a)•(1-b) |
A.至多有一次中靶 | B.两次都中靶 |
C.至少有一次中靶 | D.只有一次中靶 |
2 |
3 |
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