Asked by mica
My tenths digit is twice greater than my thousandths place.My hundredths digit is the sum of my tenths and thousandths digits.Who am i?
Answers
Answered by
Reiny
thousandth digit --- t
tens digit --------- 2t
hundredth digit ---- t + 2t = 3t
well, digits can only range from 0 to 9
let's rule out t = 0 , since that would not be a sensible number
then tenth digit is obviously an even number
so it could be 2,4,6,8
which means that t can only be 1, 2, 3, or 4
if t = 1, # is 132x , where x is any number from 0 to 9
if t=2, # is 264x
if t = 3, # is 396x
So you have 30 possible numbers
tens digit --------- 2t
hundredth digit ---- t + 2t = 3t
well, digits can only range from 0 to 9
let's rule out t = 0 , since that would not be a sensible number
then tenth digit is obviously an even number
so it could be 2,4,6,8
which means that t can only be 1, 2, 3, or 4
if t = 1, # is 132x , where x is any number from 0 to 9
if t=2, # is 264x
if t = 3, # is 396x
So you have 30 possible numbers
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