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Box of 9 is 9* 3= 27
Box of 6= 1/2* (6)=3
Therefore, box of 9 * box of 6 =27 * 3 =81
The choices are in terms of the box function.
Box of 27 is 27 * 3 =81
Therefore, choice 4 is OA.
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- by madhavi
Wed Apr 02, 2008 9:19 am- Forum: Problem Solving
- Topic: GMAT PREP QUESTION??
- Replies: 1
- Views: 1421
When v=1, w=2
Therefore, 2= p/t th root of 1
any root of 1 is 1, so p=2 -----(1)
when v=64, w=1/2
From (1), p=2 which is a constant
So, 1/2= 2/t th root of 64
t th root of 64 =4
3rd root of 64 is 4, Hence t=3.
C
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- by madhavi
Wed Apr 02, 2008 9:17 am- Forum: Problem Solving
- Topic: Not sure...
- Replies: 1
- Views: 1769
If mean is 20, the values 2.5 standard deviations away from mean will be
20 + 2.5(3) and 20 - 2.5 (3)
27.5 and 12.5.
So, anything greater than 27.5 and less than 12.5 is more than 2.5 SDs away from mean.
Hence A, 12.0
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- by madhavi
Mon Mar 31, 2008 12:03 pm- Forum: Problem Solving
- Topic: gmat prep
- Replies: 1
- Views: 1508
To solve this, we need to know that angle subtended by diameter on any point on a semi-circle is 90. Therefore ABC is a right triangle
AC=2
CB=1
AB= Sqrt(AC^2-CB^2)
AB=Sqrt3
Therfore area of ABC is (1/2)*CB* AB=(sqrt3)/2
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- by madhavi
Mon Mar 31, 2008 11:54 am- Forum: Problem Solving
- Topic: gmat prep
- Replies: 1
- Views: 1492
PS Q: The hiker travels for (20*5)/60 miles =5/3 miles in 5 min before he waits for the hiker. The hiker travles (4*5)/60 miles =1/3 miles in the meantime. So, the cyclist needs to wait until the hiker cover (5/3)-(1/3) miles ie 4/3 miles To cover this distance the hiker needs, (4/3)* (60/4) =20min ...
- by madhavi
Mon Mar 31, 2008 8:23 am- Forum: GMAT Math
- Topic: please help with several math problems
- Replies: 8
- Views: 5843
If C= p/4 + A, your solution works.
But does the Q say that? Isn't B+ C= A+p/4??
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- by madhavi
Wed Mar 26, 2008 12:48 pm- Forum: Problem Solving
- Topic: Weight problem
- Replies: 20
- Views: 4548
The mathematical solution yields (p/4)-10
I feel something is wrong with the choices. How did you deduce p/2-5 from p/4-10??
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- by madhavi
Wed Mar 26, 2008 10:09 am- Forum: Problem Solving
- Topic: Weight problem
- Replies: 20
- Views: 4548
I hope this article will be of help. http://null706.mbablogs.businessweek.com/archive/2008/01/02/2q55eyl7naoz He says, A phrase like"three times as many as John has" can be translated as 3j... Applying to the prob here, "AS MANY" k pencils "AS L PENCILS" _______________...
- by madhavi
Wed Mar 26, 2008 8:46 am- Forum: Problem Solving
- Topic: Pencils Problem...Help me
- Replies: 12
- Views: 4243
This is one of the question models that appears in GMAT. "as many as" construction is used to confuse test takers. Correlate with the following: [b] "There will be more than twice as many applicants in round two as there were in round one; and they will be competing for fewer open spo...
- by madhavi
Wed Mar 26, 2008 7:45 am- Forum: Problem Solving
- Topic: Pencils Problem...Help me
- Replies: 12
- Views: 4243
Cubby alone is not equal to p/4 + Andrea's wt
Brian +cubby = p/4 + Andrea
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- by madhavi
Wed Mar 26, 2008 7:31 am- Forum: Problem Solving
- Topic: Weight problem
- Replies: 20
- Views: 4548
Total no of pencils sold = 32 So, J + K + L= 32 Also, K =2L --------1 J + 3L =32; L =(32-J)/3 -----------2 Now, J(0.05)+K(0.10)+L(0.25)=3.40 5J + 20L +25L =340 (substituting K in terms of L from 1 ) 5J + 45(32-J)/3=340 (substituting L in terms of J from 2) Solving for J; J=14 http://goal-mba.blocked
- by madhavi
Wed Mar 26, 2008 6:16 am- Forum: Problem Solving
- Topic: Pencils Problem...Help me
- Replies: 12
- Views: 4243
Andrea's weight - A
Brian's weight - B
Cubby's weight -C
A+ B= p
B = A+10; A-B= -10
B+C= (p/4) + A
C=(p/4) + A-B
C=(p/4)-10
I cant find the answer in the choices. No answer clicks with plugging in either.
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- by madhavi
Wed Mar 26, 2008 6:04 am- Forum: Problem Solving
- Topic: Weight problem
- Replies: 20
- Views: 4548
From my understanding, a1=2 a2=-3 a3=5 a4=1 a5= a(5-4)=a1=2 a6=a2=-3... So every set of four elements in a row are the same and sum upto 5. We have 24 such sets in 96 terms. So, 24* 5 + the 97th term which is 2 120+2=122. Thats what I think. So, I was wondering if I got the an expression wrong. Any ...
- by madhavi
Sun Mar 23, 2008 10:15 am- Forum: Problem Solving
- Topic: Sum of Sequences
- Replies: 9
- Views: 1953
- by madhavi
Sun Mar 23, 2008 6:27 am- Forum: Problem Solving
- Topic: Sum of Sequences
- Replies: 9
- Views: 1953
- by madhavi
Sun Mar 23, 2008 6:25 am- Forum: Problem Solving
- Topic: Probability "with replacement"
- Replies: 10
- Views: 48869