Various latest topics from GMAT Club Forum

Is xy < 0?

(1) xy is not a positive integer.
(2) xy is not a negative integer.

This topic have been merged with: http://gmatclub.com/forum/topic-217160.html

If n and m are positive integers, is m a factor of n?

(1) n = 5(3^k), for any positive integer k
(2) m = 3^(k-1), for any positive integer k

There is a sequence A(n) where n is a positive integer such that A(n+1) = 10 + 0.5A(n). Which of the following is closest to A(1,000)?

A. 15
B. 18
C. 20
D. 25
E. 50

Any explanations would be great.

Source: MathRevolution

What is the area of Triangle ABC?

1) one side's length of Triangle ABC is 3, the other's length is 4.
2) Triangle ABC is a right triangle

Any explanation would be great.

If x is an integer, is x even?

(1) \(-1\leq{x}\leq{1}\)

(2) If x is the units digit of a number, that number is divisible by both 5 and 10.

This topic have been merged with: http://gmatclub.com/forum/topic-100514.html

There is a sequence A(n) where n is a positive integer such that A(n+1) = 10 + 0.5A(n). Which of the following is closest to A(1,000)?

A. 15
B. 18
C. 20
D. 25
E. 50

hi
can any one explain these two solution:

1. If the x-intercept of a line is 3 and the y-intercept is 4, what is the equation of the line?

ans: y = 4x/3 + 4

2. Does the point (2, 3) lie on the line formed by the equation y = 2x + 3?

ans: no

While discussing their ages, Anthony tells Kaira, 'My age is 6 times what your age was when I was your age'. The sum of their current ages is 57. Find Kaira's current age.

A. Cannot be determined
B. 19
C. 20
D. 21
E. 22

[Reveal] Spoiler:

A salt water solution initially contains 20% salt and 80% water. Water evaporates at a constant rate, changing the solution to 40% salt after one hour. What was the approximate percentage decrease in water per minute?

A. 0.1%
B. 0.2%
C. 0.3%
D. 0.4%
E. 0.5%

[Reveal] Spoiler:

If k is positive integer, What is the value of k?

(1) \(k^3\) < 60

(2) When \(k^3\) is divided by 2, the remainder is zero.

If n is a positive integer, is n equal to 6?

(1) \(n^2\) + 1 is a prime number.

(2) n > 2

Is the range of the set of numbers {j, k, l, m,n, p} greater than 5?

(1) k - n > 5

(2) k is the greatest number in the set.

What is the tens digit of a certain positive integer n?

(1) When n is divided by 230, the remainder is 30.

(2) When n is divided by 200, the remainder is 30.

Is a certain number \(p\) an integer?

(1) \(\sqrt{p}\) is an integer.

(2) \(p^2\) is an integer.

This topic have been merged with: http://gmatclub.com/forum/topic-99817.html

Is \(q\) > \(r\)?

(1) \(qr\) = 32

(2) \(q^2\) > \(r^2\)

Given that \(x\) is an integer and \(x\) is positive, is \(\frac{210}{x}\) also an integer??

(1) \(x\) is a prime number.

(2) \(x\) < 8

If a number \(n\) is pulled out of a hat at random, What is the probability that \(\frac{1}{2}\)\(n\) - 2 \(\geq{0}\)?

(1) There are 6 numbers in the hat, and each number is an integer.

(2) For every value of \(n\) in the hat, \({1}\leq\) \(n\) \(\leq{30}\).

Is xy < 0?

If x is an integer, is x^3 divisible by 7 ?

If n and m are positive integers, is m a factor of n?

Sequence Question

Area of Triangle

If x is an integer, is x even?

How much time did it take a certain car to travel 400

There is a sequence A(n) where n is a positive integer such that A(n+1

If the x-intercept of a line is 3 and the y-intercept is 4,

While discussing their ages, Anthony tells Kaira, 'My age is 6 times

A salt water solution initially contains 20% salt and 80% water. Water

If k is positive integer, What is the value of k?

If n is a positive integer, is n equal to 6?

Is the range of the set of numbers {j, k, l, m,n, p} greater than 5?

What is the tens digit of a certain positive integer n?

Is a certain number p an integer?

If y is an integer greater than 0, is (y^3 - y) divisible by 4?

Is q > r?

Given that x is an integer and x is positive, is 210/x also an integer

If a number n is pulled out of a hat at random