题目内容
中午12点分针和时针重合,经过______分钟再次重合,一昼夜分针和时针重合______次.
60÷(1-5÷60),
=60÷(1-
),
=60÷
,
=
(分钟),
60×24÷
,
=60×24×
,
=22(次).
故答案为:
,22.
=60÷(1-
| 1 |
| 12 |
=60÷
| 11 |
| 12 |
=
| 720 |
| 11 |
60×24÷
| 720 |
| 11 |
=60×24×
| 11 |
| 720 |
=22(次).
故答案为:
| 720 |
| 11 |
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