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karthikpandian19: Legendary Member; Posts: 1665; Joined: Thu Nov 03, 2011 7:04 pmFollowed by: 70 members; Thanked: 165 times

by karthikpandian19 » Wed Jan 04, 2012 9:32 pm

If N = 1234@ and @ represents the units
digit, is N a multiple of 5?
(1) @! is not divisible by 5
(2) @ is divisible by 9

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Source: Beat The GMAT — Data Sufficiency | Wed Jan 04, 2012 9:32 pm

rijul007: Legendary Member; Posts: 588; Joined: Sun Oct 16, 2011 9:42 amFollowed by: 9 members; Location: New Delhi, India; Thanked: 130 times; GMAT Score:720

by rijul007 » Wed Jan 04, 2012 10:28 pm

karthikpandian19 wrote:If N = 1234@ and @ represents the units
digit, is N a multiple of 5?
(1) @! is not divisible by 5
(2) @ is divisible by 9

(1) @! is not divisible by 5
Value of y could be 0,1,2,3 or 4

Insufficient

(2) @ is divisible by 9
Value of @ could be 0 or 9

Insufficient

Combining 2 statements
0! = 1 [not divisible by 5]
9! is divisible by 5

@ = 0

Option C

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karthikpandian19: Legendary Member; Posts: 1665; Joined: Thu Nov 03, 2011 7:04 pmFollowed by: 70 members; Thanked: 165 times

by karthikpandian19 » Thu Jan 05, 2012 9:19 pm

OA is C

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