perplexus.info :: Numbers : Cross Product Quickie

Cross Product Quickie (Posted on 2023-04-24)

+---+     +---+     +---+
|   |  X  |   |  X  |   | = 54
+---+     +---+     +---+
  X         X         X
+---+     +---+     +---+
|   |  X  |   |  X  |   | = 120
+---+     +---+     +---+  
  X         X         X
+---+     +---+     +---+
|   |  X  |   |  X  |   | = 56
+---+     +---+     +---+
  =         =         =
 96        180       21

Use each of the digits from 1 to 9 exactly once to satisfy this cross product puzzle.
How fast can you come up with the solution using only p&p (no calculator)?

Extra Challenge: Can you come up with the solution in your mind (without using p&p)?

Submitted by K Sengupta

Rating: 3.3333 (3 votes)

Solution: (Hide)

+---+ +---+ +---+ | 6 | X | 9 | X | 1 | = 54 +---+ +---+ +---+ X X X +---+ +---+ +---+ | 8 | X | 5 | X | 3 | = 120 +---+ +---+ +---+ X X X +---+ +---+ +---+ | 2 | X | 4 | X | 3 | = 56 +---+ +---+ +---+ = = = 96 180 21
For an explanation, refer to the solution submitted by Larry in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
used some paper	Larry	2023-04-24 10:04:01
p&p	Charlie	2023-04-24 09:59:13
Correct Solution (spoiler)	Steve Herman	2023-04-24 09:05:56
re: No Subject	Steve Herman	2023-04-24 08:52:16
S P O I L E R	Ady TZIDON	2023-04-24 08:35:39
No Subject	Ady TZIDON	2023-04-24 08:30:34

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