Search found 1449 matches


GMATH practice exercise (Quant Class 20) The graphs of f(x) = x^3-x and g(x) = mx+n are represented in the figure given. If m and n are constants, what is the value of mn ? https://i.postimg.cc/y8hscxrx/28-Mar19-3z.gif (A) -4 (B) -2 (C) 2 (D) 4 (E) 6 https://i.postimg.cc/ZnnBXy0K/28-Mar19-4.gif $$?...

by fskilnik@GMATH

Thu Mar 28, 2019 11:34 am
Forum: Problem Solving
Topic: The graphs of f(x) = x^3-x and g(x) = mx+n are represent
Replies: 1
Views: 296

GMATH practice exercise (Quant Class 17) Company ABC has decided to distribute to its clients several shares of stocks, 1000 stocks per share. Mr. Alicante (its minor client) received 1 share, Mrs. Jung (its second minor client) received 3 shares, Mrs. Thompson (its third minor client) received 5 s...


GMATH practice exercise (Quant Class 16) The sum of all integers between 500 and 2500 that are divisible by both 18 and 75 is: (A) 6750 (B) 6300 (C) 5400 (D) 4050 (E) 3150 $$? = \sum N \,\,\,::\,\,\,\left\{ \matrix{ \,500 < N\,\,{\mathop{\rm int}} < 2500\,\,\,\,\left( * \right) \hfill \cr \,{N \ove...


The graphs of f(x) = x^3-x and g(x) = mx+n are represent

GMATH practice exercise (Quant Class 20) The graphs of f(x) = x^3-x and g(x) = mx+n are represented in the figure given. If m and n are constants, what is the value of mn ? https://i.postimg.cc/y8hscxrx/28-Mar19-3z.gif (A) -4 (B) -2 (C) 2 (D) 4 (E) 6 Answer: [spoiler]______(D)__[/spoiler]

by fskilnik@GMATH

Thu Mar 28, 2019 7:03 am
Forum: Problem Solving
Topic: The graphs of f(x) = x^3-x and g(x) = mx+n are represent
Replies: 1
Views: 296

Company ABC has decided to distribute to its clients several

GMATH practice exercise (Quant Class 17) Company ABC has decided to distribute to its clients several shares of stocks, 1000 stocks per share. Mr. Alicante (its minor client) received 1 share, Mrs. Jung (its second minor client) received 3 shares, Mrs. Thompson (its third minor client) received 5 s...


The sum of all integers between 500 and 2500 that are divisi

GMATH practice exercise (Quant Class 16)

The sum of all integers between 500 and 2500 that are divisible by both 18 and 75 is:

(A) 6750
(B) 6300
(C) 5400
(D) 4050
(E) 3150

Answer: [spoiler]______(B)__[/spoiler]


If x+sqrt(x^2-4x+4)=2, then:

GMATH practice exercise (Quant Class 12) https://i.postimg.cc/jShGfcfw/27-Mar19-3.gif Answer: [spoiler]______ (A)__[/spoiler] Important: Have you realized (looking at the alternative choices carefully) that the answer MUST BE (A)? Reason: if (B), (C), (D), or (E) is true, then (A) is also true! On ...

by fskilnik@GMATH

Wed Mar 27, 2019 12:39 pm
Forum: Problem Solving
Topic: If x+sqrt(x^2-4x+4)=2, then:
Replies: 1
Views: 178

If x+sqrt(x^2-4x+4)=2, then:

GMATH practice exercise (Quant Class 12) https://i.postimg.cc/jShGfcfw/27-Mar19-3.gif Answer: [spoiler]______ (A)__[/spoiler] Hint: [spoiler]The alternative choices are tricky... the official answer is NOT wrong... and you can find it in 3 SECONDS, using LOGIC only! Obs.: someone could argue that G...

by fskilnik@GMATH

Wed Mar 27, 2019 11:57 am
Forum: Problem Solving
Topic: If x+sqrt(x^2-4x+4)=2, then:
Replies: 1
Views: 178

At a certain school, the student to teacher ratio is 52 to 9

At a certain school, the student to teacher ratio is 52 to 9. If 38 students and 11 teachers leave, which of the following COULD represent the number of students and teachers remaining at the school? A) 532 students and 88 teachers B) 794 students and 162 teachers C) 1106 students and 225 teachers ...


Two trains travel at constant speeds. What is the ratio of t

GMATH practice exercise (Quant Class 19) Two trains travel at constant speeds. What is the ratio of the slower speed to the faster speed? (1) The time it takes for one train to pass the other when they are in the same direction is 3h. (2) The time it takes for one train to pass the other when they ...


GMATH practice exercise (Quant Class 14) https://i.postimg.cc/KjBctDqw/26-Mar19-3w.gif $$A = {{\left( {x + y + 1} \right)} \over {x + y}} \cdot {{\left( {x + z + 2} \right)} \over {x + z}} \cdot {{\left( {x + w + 3} \right)} \over {x + w}} = \left( {1 + {1 \over {x + y}}} \right)\left( {1 + {2 \ove...

by fskilnik@GMATH

Tue Mar 26, 2019 1:38 pm
Forum: Data Sufficiency
Topic: ((x+y+1)/(x+y))((x+z+2)/(x+z))((x+w+3)/(x+w))>8?
Replies: 1
Views: 180

GMATH practice exercise (Quant Class 18) Last Monday N female executives (N>1) received M male managers (M>1) for a business meeting. If every person shook hands exactly once with every other person in the meeting, what is the difference between the total number of shaking hands and the number of s...


Two trains travel at constant speeds. What is the ratio of t

GMATH practice exercise (Quant Class 19) Two trains travel at constant speeds. What is the ratio of the slower speed to the faster speed? (1) The time it takes for one train to pass the other when they are in the same direction is 3h. (2) The time it takes for one train to pass the other when they ...


((x+y+1)/(x+y))((x+z+2)/(x+z))((x+w+3)/(x+w))>8?

GMATH practice exercise (Quant Class 14)

Image

Answer: [spoiler]_____(A)__[/spoiler]

by fskilnik@GMATH

Tue Mar 26, 2019 9:02 am
Forum: Data Sufficiency
Topic: ((x+y+1)/(x+y))((x+z+2)/(x+z))((x+w+3)/(x+w))>8?
Replies: 1
Views: 180

Last Monday N female executives (N>1) received M male man

GMATH practice exercise (Quant Class 18) Last Monday N female executives (N>1) received M male managers (M>1) for a business meeting. If every person shook hands exactly once with every other person in the meeting, what is the difference between the total number of shaking hands and the number of s...