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hakyology
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PostPosted: Mon Jul 07, 2008 8:56 am    Post subject: integers Reply with quote
hwo many integers between 324,700 and 458,600 have tens digit 1 and units digit 3?
A 10,300
B 10,030
C 1,353
D 1,352
E 1,339

the answer is E. please explain.Thank you.
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TRANGZON
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Location: California
Target GMAT Score: 600
PostPosted: Mon Jul 07, 2008 1:43 pm    Post subject: Reply with quote
458 600 - 324 700 = 133 900

We need to find xxxx13

Each a hundred has one number has xxxx13

---> 133 900 : 100 = 1339
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