Which of the following numbers will always divide a 5-digit number of the form xy0xy, where 'x' can take values from 1 to 9 and 'y' can take values from 0 to 9?

I. 143
II. 77
III. 93

A. I only

B. I and II only

C. II and III only

D. I and III only

E. I, II and III

Question

Which of the following numbers will always divide a 5-digit number of the form xy0xy, where 'x' can take values from 1 to 9 and 'y' can take values from 0 to 9?

I.   143
II.   77
III.   93

A.   I only

B.   I and II only

C.   II and III only

D.   I and III only

E.   I, II and III

anonymous · Answer

AMIT? THE SHAM DUDE?

anonymous · Answer

ROSHIN??

anonymous · Answer

no guys m new ..joined this blog yestday

anonymous · Answer

o

myininaya · Answer

i know its not 93 because 10010/93 is not an integer

myininaya · Answer

when i do 10011/143, its not an integer and neither is 10011/77 
so it would be none of these, but that doesnt look like an option

myininaya · Answer

how could it be any of the above when 10011/k does not give an integer where k=77,93,143.

anonymous · Answer

http://www.4gmat.com/prep_courses/sample_quiz/Number_Theory/question_2.shtml I got this question frm here...

myininaya · Answer

do you know if you go to the last question it gives you an option to see the answer and explanation of each problem

myininaya · Answer

oh i see  ok yeah 10011 wouldnt be a number of concern because I changed the second x

nowhereman · Answer

Ok, here is how you solve: Explicitly write down what number xy0xy is (think positional notation), factorize it and see which factor occurs independently form x and y.