Hexadecimal number multiplication

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Discussion Overview

The discussion revolves around the multiplication of hexadecimal numbers, focusing on a specific discrepancy between a participant's solution and the solution provided in a textbook. The scope includes technical reasoning related to hexadecimal arithmetic.

Discussion Character

  • Technical explanation, Debate/contested, Mathematical reasoning

Main Points Raised

  • One participant presents their solution to a hexadecimal multiplication problem and notes a difference with the textbook answer, specifically in a marked area.
  • Another participant asserts that the textbook's answer is correct and suggests that the discrepancy may be due to an error in carrying during the multiplication process.
  • A third participant agrees with the textbook solution and provides a breakdown of the multiplication, showing intermediate steps that lead to the correct answer.
  • A later reply confirms a mistake in carrying and indicates that the participant has corrected their solution based on the feedback received.

Areas of Agreement / Disagreement

There is a general agreement among some participants that the textbook solution is correct, while the original poster initially disagreed due to their own calculation. The discussion reflects both the initial confusion and subsequent clarification regarding the multiplication process.

Contextual Notes

Participants mention specific calculations and potential errors in carrying, but do not resolve all aspects of the multiplication process or the reasoning behind the differences in solutions.

Who May Find This Useful

This discussion may be useful for individuals learning hexadecimal arithmetic, particularly those encountering difficulties with multiplication and carrying in base-16 calculations.

momentum
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I am trying to multiply hexadecimal numbers.

Here is what my book has given

lOD7yDy.png

Here is my solution
0vDxRa0.png


book solution and my solution has differed in the red marked area.

which solution is correct?

am I doing anything wrong here? I get 6 F but book wrote 78 in that red marked area.

Need help with this part.

Thanks

 

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momentum said:
I am trying to multiply hexadecimal numbers.

Here is what my book has given

View attachment 225710
Here is my solution
View attachment 225711


book solution and my solution has differed in the red marked area.

which solution is correct?

am I doing anything wrong here? I get 6 F but book wrote 78 in that red marked area.

Need help with this part.

Thanks
The book's answer is correct for the part you circled. I didn't check anything else. I verified this using the calculator in Windows, in Programmer mode.
A possible reason for the number you got is that you didn't carry correctly.
 
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I get the book solution.
You have B * AFC4 = 6E000 + A500 + 840 + 2C and the 6E000 + A000 = 78000
 
Mark44 said:
A possible reason for the number you got is that you didn't carry correctly.

Yes. I made mistake in carry. corrected now.
Thanks. It helped a lot.
 

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