what such numbers are known as?? | Jan. 29, 2010
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The number that has an even number of digits and is formed by multiplying a pair of numbers containing half the numbers of digits of the result. The digits are taken from the original number in any order. Pairs of trailing zeroes are not allowed.( Example include: 1260=21*60, 1827=21*87, 2187=27*81 etc etc) is known as ___________ number.