AB and BA are 2-digits integers and AB*BA=CDE, where CDE is : DS Archive
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# AB and BA are 2-digits integers and AB*BA=CDE, where CDE is

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AB and BA are 2-digits integers and AB*BA=CDE, where CDE is [#permalink]

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27 May 2006, 18:53
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AB and BA are 2-digits integers and AB*BA=CDE, where CDE is a 3-digits integer. What is AB?
1). A=E
2). A=C
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27 May 2006, 20:36
C.

if A = E / A = C then the answer can be many such as 15/51, 12/21

but if both A=E=C then Answer is 12/21
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27 May 2006, 20:40
mahesh004 wrote:
C.

if A = E / A = C then the answer can be many such as 15/51, 12/21

but if both A=E=C then Answer is 12/21

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27 May 2006, 20:45
I think its E .
as there are multiple numbers satisfying these cretereon
eg. 11 , 11
and 12 , 21
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27 May 2006, 22:57
B it is.

Only when A=C we have AB =21 and BA = 12.
CDE = 252,
B by itself is suff to answer the question.
27 May 2006, 22:57
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