Guest Posted June 28, 2009 Report Share Posted June 28, 2009 Each number in the pyramid is the sum of the two numbers immediately below it. Fill in the pyramid with the missing numbers. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 28, 2009 Report Share Posted June 28, 2009 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 28, 2009 Report Share Posted June 28, 2009 too fast. try for other possibilites Quote Link to comment Share on other sites More sharing options...
0 superprismatic Posted June 28, 2009 Report Share Posted June 28, 2009 Suppose the numbers are written in base x notation. First of all, x>9 since there's a 19 in the puzzle. Converted to base 10 (which we all love and cherish), the puzzle can be filled out (top-to-bottom and left-to-right with: 9x+13, 4x+7, 5x+6, x+9, 3x-2, 2x+8, 7, x+2, 2x-4, 12, 12-x, x-5, 7, 2x-11, and 23-2x. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 28, 2009 Report Share Posted June 28, 2009 Each number in the pyramid is the sum of the two numbers immediately below it. Fill in the pyramid with the missing numbers. Start by determining that the second number in the second row from the bottom is 12 (19 - 7) and the rest follows pretty obviously. The result is: bottom row reads: 2 5 7 9 3 next up: 7 12 16 12 next: 19 28 28 next: 47 56 top number: 103 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 28, 2009 Report Share Posted June 28, 2009 Start by determining that the second number in the second row from the bottom is 12 (19 - 7) and the rest follows pretty obviously. The result is: bottom row reads: 2 5 7 9 3 next up: 7 12 16 12 next: 19 28 28 next: 47 56 top number: 103 you know steeleman23 already guessed that and that what I got too, but rohit said it was wrong. Quote Link to comment Share on other sites More sharing options...
0 superprismatic Posted June 28, 2009 Report Share Posted June 28, 2009 Here's a more concrete solution based on my previous post If the numbers are in base 11 (the only base other than 10 which has all positive numbers in the pyramid), the pyramid is: A2 47, 56 19, 29, 28 7, 12, 17, 11 1, 6, 7, 10, 1 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 28, 2009 Report Share Posted June 28, 2009 Here's a more concrete solution based on my previous post If the numbers are in base 11 (the only base other than 10 which has all positive numbers in the pyramid), the pyramid is: A2 47, 56 19, 29, 28 7, 12, 17, 11 1, 6, 7, 10, 1 how is 29+28=56? Quote Link to comment Share on other sites More sharing options...
0 superprismatic Posted June 28, 2009 Report Share Posted June 28, 2009 28 in base 11 is 2 times 11 plus 8; 29 in base 11 is 2 times 11 plus 9; Adding these, we get 4 times 11 plus 17 which is 5 times 11 plus 6 -- that's 56 in base 11. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 29, 2009 Report Share Posted June 29, 2009 Why are people thinking in multiple bases? It was merely a logic problem. Beefing it up by thinking in base 11 is just making a mountain out of a molehill. Really now. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 29, 2009 Report Share Posted June 29, 2009 I got the same too: Top row: 103 next: 47, 56 next: 19,28,28 next: 7,12,16,12 last row:2, 5, 7, 9, 3 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted June 29, 2009 Report Share Posted June 29, 2009 you know steeleman23 already guessed that and that what I got too, but rohit said it was wrong. i didnt say that steeleman23 is wrong. his answer is correct. when i solved it got the same answer. i thought there might be different answers for this puzzles, so i asked u try for other possibilities. Quote Link to comment Share on other sites More sharing options...
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Each number in the pyramid is the sum of the two numbers immediately below it. Fill in the pyramid with the missing numbers.
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