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Source: — Data Sufficiency |
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by cramya » Mon Jan 05, 2009 6:17 am
q 1)

Given: 6 consective intgers lets say x,x+1,....x+5

Stmt I

x+5 = 20

Can find x and hence n

SUFF

stmt II

Average of 6 is 17.5

Can find x and therefroe n

SUFF

Choose D)
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by cramya » Mon Jan 05, 2009 6:25 am
Q 2)

Not sure what the OA is.

I am getting E). With stmt I and II we still cant say if more than 50% have brown hair or not.

See attached.
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brown.xls
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by vivek.kapoor83 » Mon Jan 05, 2009 9:13 am
Q1
stmt 1 -- greatest integer -20 so n = 15*20
So Suff

Stme 2 -- avg is 17.5 , total = 17.5*6 =105
n+n+1+n+2+n+3+n+4+n+5=105
6n+15 =105
n =90/6 = 15
so.. product can be cal.

Hence D


Q2. STmt1 : No info abt girls -insuff
stmt2 - no info abt noys
Together - Still no info how many boy n girls
SO INsuff

E.
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