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# DS Sum of digits problem..

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VP
Joined: 02 Jun 2006
Posts: 1266
Followers: 2

Kudos [?]: 48 [0], given: 0

DS Sum of digits problem.. [#permalink]  06 Aug 2006, 19:36
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
DS Sum of digits problem...
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DS Prob4.JPG [ 43.6 KiB | Viewed 691 times ]

Senior Manager
Joined: 22 May 2006
Posts: 375
Location: Rancho Palos Verdes
Followers: 1

Kudos [?]: 35 [0], given: 0

Pin number = abca
Given 2a+b+c = 24

S1. a+c = 13 insuff.
S2. b+a = 11 insuff.

Combine S1 and S2.
a+c+b+a = 24 same as given : insuff.
ex.
7467
8358

Hence E
_________________

The only thing that matters is what you believe.

SVP
Joined: 30 Mar 2006
Posts: 1737
Followers: 1

Kudos [?]: 46 [0], given: 0

E

1) 1st + 3rd = 13 Insuff

2) 2nd + 4th = 11 Insuff

Together

9249 and 5685..... etc

hence not suff
Manager
Joined: 20 Mar 2006
Posts: 200
Followers: 1

Kudos [?]: 1 [0], given: 0

abcd be the 4 digit pin
a=d
a+b+c+d=24

(1) a+c =13
a=7,b=4,c=6,d=7 numbers are 4,6,7

or a=6,b=5,c=7,d=6 numbers are 5,6,7
BCE

(2) b+d = 11
a=6,b=5,c=7,d=6 numbers are 5,6,7
a=8,b=3,c=5,d=8 numbers are 3,5,8
CE

(1)&(2)
a=6,b=5,c=7,d=6 numbers are 5,6,7
or
a=8,b=3,c=5,d=8 numbers are 3,5,8

Hence E

Heman
VP
Joined: 14 May 2006
Posts: 1418
Followers: 4

Kudos [?]: 65 [0], given: 0

I'd say E too with no doubt...

there are several possibilities for the 1st st-t and several for the second when they are combined
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