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Number Pyramid (Posted on 2004-08-20) Difficulty: 2 of 5
A "Number Pyramid" is composed of ten different numbers ( usually 0 - 9 ) with four rows. ONE EXAMPLE of a Number Pyramid is as follows:


    1   2

  3  4   5

6  7   8   9

Given the clues below, determine the composition of a new Number Pyramid.

1) The sum of the two numbers in the second row is 11.

2) The sum of the numbers in the bottom row minus the sum of the numbers in the third row equals 10.

3) The rightmost numbers in the four rows must sum to 18.

4) The middle number in the third row minus the leftmost number in the second row should equal 4.

5) Subtracting the top number in the Pyramid from the rightmost number in the second row leaves 4.

6) In the bottom row, the leftmost number is greater than the second number from the left, while the rightmost number is greater than the second number from the right.

For bonus marks, which of the above clues (if any), are not necessary in order to construct the pyramid?

See The Solution Submitted by Jane Doe    
Rating: 3.5556 (9 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: i did it!Rebecca Jaffe2005-08-30 05:14:22
i did it!Kitten2004-12-10 05:56:27
original solutionBob Williamson2004-10-23 00:34:11
SolutionsolutionDetti2004-10-05 07:52:23
SolutionsolutionDetti2004-10-05 07:51:55
re: # pyramidNate Morris-Ricci2004-09-29 14:34:23
# pyramiddavid2004-09-27 14:19:33
SolutionNo SubjectJACKIE TAYLOR2004-09-11 05:07:41
re: possible solutionRafal2004-09-10 09:09:50
possible solutionJosh2004-09-08 17:37:15
SolutionNecessary clues - part 2Rafal2004-09-05 11:13:53
Some ThoughtsNecessary cluesRafal2004-09-04 14:13:21
SolutionSolution with descriptionRafal2004-09-04 13:14:29
SolutionSolution?RandyOrton2004-08-26 11:28:08
Maybe...sarah2004-08-23 00:02:45
re: Question?dhruv2004-08-22 10:14:02
Question?Bruce Brantley2004-08-22 00:00:29
answer?terri2004-08-21 21:17:35
SolutionFull solution!dhruv2004-08-21 05:14:37
SolutionNo SubjectBJ2004-08-20 18:21:48
SolutionSolution, not computernikki2004-08-20 11:24:28
Some ThoughtsAlmost a solutionVishal Baghel2004-08-20 10:47:14
Explanation neededGamer2004-08-20 10:44:33
Solutioncomputer solutionCharlie2004-08-20 09:50:22
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