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Re: If x is negative and y is positive, which of the following must be [#permalink]

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09 Nov 2015, 01:18

A. x/y -ve/+ve=-ve will be negative B. xy -ve*+ve= -ve will be negative C. 2y + x might be positive or negative . The sign will be depend on the absolute values of x and y . The expression will be positive if 2y>x D. (x + y)^2 + 1 = (x+y)^2 will be positive irrespective of the absolute values of x and y will be positive always E. 3x/y =- ve/ +ve will be negative

Answer D
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Re: If x is negative and y is positive, which of the following must be [#permalink]

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09 Nov 2015, 09:15

IMPORTANT TIP: To answer this question, we'll need to examine every answer choice. Given this, where would a crafty test-maker place the correct answer? He/she would place it near the bottom, because most people check the answer choices from top to bottom. So, whenever we have such a question, I suggest that we start from the bottom and work our way to the top.

Re: If x is negative and y is positive, which of the following must be [#permalink]

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10 Nov 2015, 06:09

robu wrote:

Bunuel wrote:

If x is negative and y is positive, which of the following must be positive?

A. x/y B. xy C. 2y + x D. (x + y)^2 + 1 E. 3x/y

Sir i have a query. Can negative integers be even and odd, for example, -4 is even number?

Yes.

1. An even number is an integer that is "evenly divisible" by 2, i.e., divisible by 2 without a remainder. 2. An odd number is an integer that is not evenly divisible by 2. 3. According to the above both negative and positive integers can be even or odd.

Re: If x is negative and y is positive, which of the following must be [#permalink]

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10 Nov 2015, 09:24

1

1

Bunuel wrote:

robu wrote:

Bunuel wrote:

If x is negative and y is positive, which of the following must be positive?

A. x/y B. xy C. 2y + x D. (x + y)^2 + 1 E. 3x/y

Sir i have a query. Can negative integers be even and odd, for example, -4 is even number?

Yes.

1. An even number is an integer that is "evenly divisible" by 2, i.e., divisible by 2 without a remainder. 2. An odd number is an integer that is not evenly divisible by 2. 3. According to the above both negative and positive integers can be even or odd.

Re: If x is negative and y is positive, which of the following must be [#permalink]

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10 Nov 2015, 10:07

GMATPrepNow wrote:

Bunuel wrote:

robu wrote:

Sir i have a query. Can negative integers be even and odd, for example, -4 is even number?

Yes.

1. An even number is an integer that is "evenly divisible" by 2, i.e., divisible by 2 without a remainder. 2. An odd number is an integer that is not evenly divisible by 2. 3. According to the above both negative and positive integers can be even or odd.

I'd like to add that 0 is also even. GMAT questions often test this concept.

Cheers, Brent

Yes.

ZERO:

1. 0 is an integer.

2. 0 is an even integer. An even number is an integer that is "evenly divisible" by 2, i.e., divisible by 2 without a remainder and as zero is evenly divisible by 2 then it must be even.

3. 0 is neither positive nor negative integer (the only one of this kind).

4. 0 is divisible by EVERY integer except 0 itself.
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