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29#
发表于 2019-04-11 17:45:10
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Each number on the lower half of the circle divided by the number adjacent to it on the upper half of the circle gives 5, i.e [10/2]=5, [15/3]=5, [20/4]=5...
Therefore the unknown number is 1..
How:-
Since 5 (the number adjacent to the unknown number) divided by the unknown number is 5 (the number in the middle), that means 5 (the number adjacent to the unknown number) divided by 5 ( the number in the middle) will give the unknown number.
therefore 5/5= 1... {:16_24:}{:16_24:}{:16_24:}{:16_24:} |
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