 All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars  perplexus dot info  Number Pyramid (Posted on 2004-08-20) A "Number Pyramid" is composed of ten different numbers ( usually 0 - 9 ) with four rows. ONE EXAMPLE of a Number Pyramid is as follows:

ĀĀ ĀĀ 0

ĀĀĀ 1ĀĀ 2

Ā 3ĀĀ4ĀĀ 5

6ĀĀ7ĀĀ 8ĀĀ 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: ( Back to comment list | You must be logged in to post comments.) Question? | Comment 8 of 24 | In a "number pyramid", are the numbers always sequential.  If so, the posted solutions are true, but if not larger numbers could be used to make the pyramid true.

For example,

2

5    6

21   9    3

12   10   4   7

 Posted by Bruce Brantley on 2004-08-22 00:00:29 Please log in:

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