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Solution If MX+NY is divisible by MN, it means (MX+NY)/MN is an integer. This means MN divides MX and MN divides NY. I dont think that it would be always true that If MX+NY is divisible by MN, it means (MX+NY)/MN is an integer. This means MN divides MX and MN divides NY . Let's say M =3 , N = 3 => ...

by electrico

Tue May 18, 2010 9:37 pm
Forum: Problem Solving
Topic: 169) true factors
Replies: 5
Views: 1708

IMO A.

Its already given that x<y, so point considering the case If x = 4 and y = 3.

by electrico

Fri May 14, 2010 12:03 am
Forum: Data Sufficiency
Topic: 123 is x<0
Replies: 6
Views: 1635

Here, the total food items should be amultiple of 14 - 42, 56, 70... (note that for fish >5, you need at least a total of 42 food items. Stmn1: beef could be a multiple of 5. Total can not be determined. Total can be 42 ( 21, 15, 6) or 56 ( 28, 20, 8) or 70 (35, 25, 10 ). NOT Sufficient. Stmnt 2: SU...

by electrico

Thu May 13, 2010 11:44 pm
Forum: Data Sufficiency
Topic: 183) how many food items
Replies: 1
Views: 1069

IMO B.

Since MX+NY is divisible by MN, the result of the dicision should be an integer. This is poosible when MN is a factor of YN, in which case the result would be MX, an integer.

by electrico

Thu May 13, 2010 11:34 pm
Forum: Problem Solving
Topic: 169) true factors
Replies: 5
Views: 1708

A, are able to be trained to communicate as humans - wordy B, Were able to be trained to communicate like humans - wrong tense C, Can be trained to communicate like humans can - wrong comparision D, Could be trained to communicate as humans -- correct +precise E, Are capable of being trained to comm...

by electrico

Wed May 12, 2010 2:49 am
Forum: Sentence Correction
Topic: confusing question
Replies: 21
Views: 3930

a play was performed as part of a benefit for a charity. Nobody who wanted to buy tickets to the benefit had ever seen the play performed before. Because of the high demand only people who had never seen the play performed before were allowed to buy tickets for the benefit. Therefore everyone who w...

by electrico

Wed May 12, 2010 2:40 am
Forum: Critical Reasoning
Topic: Kaplan CAT test's question
Replies: 10
Views: 1937

Out of these two option, C is the best answer, because the arguement is about human sickness, not about human. So, D becomes out of scope.

by electrico

Mon May 10, 2010 3:05 am
Forum: Critical Reasoning
Topic: genetic susceptibility
Replies: 11
Views: 4468

IMO B. Lets the cost is $100. Now, for $100, he has got 1.20 meter cloths. He will sell the same clothes at $ 80 per meter (20 % discount). Bou he will charge a sum for 1.5 meter because his scale is of .80 meter. So, while selling, the same clothes of 1.20 meter will become 1.5 meter. So sell price...

by electrico

Fri May 07, 2010 2:37 am
Forum: Problem Solving
Topic: an ideal meter scale
Replies: 2
Views: 4579

Stem: if r>0 and s>0 , is r/s<s/r ?

r/s < s/r => r^2 < s^2 (multiply each side by rs)

or, is r^2 / s^2 < 1 ?

Stmnt1: r/3s<1/4 => r/s < 3/4 hence sufficient

Stmnt2 : s=r+4

Since r>0 and s>0 , r^2 / s^2 < 1 ( r=1, s=5)
Hence sufficient.

Answer is D.

by electrico

Fri May 07, 2010 1:03 am
Forum: Data Sufficiency
Topic: Inequality
Replies: 1
Views: 1139

Here S1 says k has 27 factors thus sufficient

Man, S1 says that K has the same number of positive integer factors as 3^3 = 27, which has 4 factores - 1,3,9,27.

S1 and S2 are not contradicting. The answer is D.

by electrico

Fri May 07, 2010 12:55 am
Forum: Data Sufficiency
Topic: S1 and S2 Contradicting each other
Replies: 3
Views: 917

It's like selecting three things out of 6 available things.

So, No. of ways = 6C3 = 6!/3!*3! = 20

Lets say flavour are A,B,C,D,E, AND F.

Start selecting three flavour ---

ABC
ABD
ABE
ABF....You will get a total of 20 flavour.

by electrico

Fri May 07, 2010 12:37 am
Forum: Problem Solving
Topic: Combinations problem
Replies: 5
Views: 1429

Here, nothing has been said that the chips are a multiple of 12 or 14. Let say, no of piles is x. As per question, 12x = 12 +14x => x = 6, hence we do not need any of the stment. I don't understand why are we considering multiple of 12 and 14 (like 828, 840 ) Hey , If you read the question carefull...

by electrico

Thu Apr 29, 2010 1:22 am
Forum: Data Sufficiency
Topic: gambler chips
Replies: 7
Views: 1434

I guess Each of the two opposite faces means one pair of opposite faces .

by electrico

Thu Apr 29, 2010 12:38 am
Forum: Data Sufficiency
Topic: Question #122: OG12: on Page 283, explanation on page 330
Replies: 3
Views: 1407

In a casino, a gambler stacks a certain number of chips in piles, with 12 chips in each pile and no chips left over. After winning 12 extra chips in a hand of poker, the gambler again stacks his chips in piles, with 14 chips in each pile and no chips left over. How many chips did the gambler have b...

by electrico

Thu Apr 29, 2010 12:35 am
Forum: Data Sufficiency
Topic: gambler chips
Replies: 7
Views: 1434

No need of apostrophy here. eliminate A, B, and C.

In E, called by the name of is reduntant. Hence. D

by electrico

Wed Apr 28, 2010 11:44 pm
Forum: Sentence Correction
Topic: 1000SC Question No 451
Replies: 12
Views: 3537