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k+5

by mjjking » Mon Mar 23, 2009 11:11 pm
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Source: — Data Sufficiency |
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by bluementor » Tue Mar 24, 2009 4:13 am
https://www.beatthegmat.com/gmat-prep-in ... 15156.html

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by sanjay_dce » Tue Mar 24, 2009 9:41 am
it has to be B stmt2 is alone sufficient
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by sacx » Tue Mar 24, 2009 11:19 am
I. k > 35

when k = 36,37,38,39
k+5 = 41,42,43,44

when k = 40,41,42,43,44
k+5 = 45,46,47,48,49

both the sets satisfy the condition k+5 having units digit 4. Hence k can have 3 or 4 as the unit's digit. Insufficient

II. if units digits is greater than 5 , then the only numbers to satisfy (k+5) condition is 36,37,38,39. So the units digit of k is 3. Sufficient

hence B
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