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2008-08-20 7:04 pm
1.find two possible 3-digit denary number such the each that of them can be converted into a 8-digit binary number and a 2-digit hexadecimal .

2.find twwo possible binary number which are divisible 6 and 8 when they are converted into denary numbers.

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回答 (1)

2008-08-20 7:47 pm
✔ 最佳答案
Q1.
For 8 digit binary number, maximum value is 255.For 7 digit binary number, maximum is 128.
For 2 digit hexadecimal number, maximum value is also 255.
So the 3 digit denary number should be between 128 and 255.
First possibility : 200. Binary number is 11001000. Hexadecimal is C8.
Second possibility : 240. Binary is 11110000. Hexadecimal is F0.
Q2.
Number divisible by both 6 and 8 can be 24 and 48.
24 in binary is 11000. 48 in binary is 110000.


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