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What number is divisible by 5 and 9 not 10 and its a 4 digit number and it contains on 2 different numbers?
Wiki User
∙ 11y ago
The number is divisible by 5 then its end is either 0 or 5
The number is divisible by 9 then the sum of its digits is divisible by 9
If the number is divisible by 5 but not by 10 then it means that the number is divisible by 5 but not by 2, thus it's not an even number.
The number is not even so it ends with 5
So the number is written a5a5 or aa55 or 5aa5.
a+5+a+5 = 2 x a+10 which must be divisible by 9
if a = 1 then is doesn't work
if a = 2 then is doesn't work
if a = 3 then is doesn't work
if a = 4 then 4545 or 4455 or 5445 are ok
if a = 5 then is doesn't work
if a = 6 then is doesn't work
if a = 7 then is doesn't work
if a = 8 then is doesn't work
if a = 9 then is doesn't work
Wiki User
∙ 11y ago
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