Find a two-digit mumber that satisfies the following conditions:
(1) the tens-digit is greater than the unit-digit by 2.
(2) the square of the unit-digit is larger than twice the tens-digit.
A possible solution is 64. Would you suggest other solutions?
Mathematic F.1 (One question)
2008-08-07 5:59 pm
回答 (1)
2008-08-07 6:08 pm
✔ 最佳答案
Some of the possible solutions are 75, 86, 97.First, you could write all the solutions, eg, 31, 42, 53, 64, 75, 86, 97and then cross out all the incorrect solutions.
參考: me
收錄日期: 2021-04-13 15:55:21
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