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drrajus faculty



Joined: 13 Oct 2007
Posts: 319
PostPosted: Sat Oct 13, 2007 1:50 pm    Post subject: Hi.. Students Reply with quote

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sudha



Joined: 14 Oct 2007
Posts: 3
PostPosted: Sun Oct 14, 2007 2:39 pm    Post subject: Reply with quote

The average of 55 girls is g,average of 45 boys is b then
Col a Col b
the avg of 100 boys and girls (b+g)/2

can u gimme the ans
my ans is (c)

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sudha



Joined: 14 Oct 2007
Posts: 3
PostPosted: Sun Oct 14, 2007 3:40 pm    Post subject: Reply with quote

The combined mean of three groups is 12 and the combined mean of the first two groups is 3. if the first, second and third groups have 2, 3 and 5 items


respectively, then mean of third group is:
a) 10
b) 21
c) 12
d) 13

ans for this plz

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n_sun30



Joined: 02 Feb 2010
Posts: 18
PostPosted: Tue Jul 27, 2010 12:41 pm    Post subject: Reply with quote

ans is C

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n_sun30



Joined: 02 Feb 2010
Posts: 18
PostPosted: Tue Jul 27, 2010 12:42 pm    Post subject: Reply with quote

n_sun30 wrote:
ans is C


Sorry, it is B (Ans)

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