I just published my video explanations to all of the 100+ problem solving questions in the recently released GMAT™ Focus Official Practice Questions – Quantitative for the redesigned GMAT Focus Edition test.
Archives for 2023
GMAT Problem Solving Question 58: Algebraic Inequalities
Try the following GMAT Problem Solving question that tests your understanding of algebraic inequalities with three variables.
Question 58:
Which of the following must be true ?
- If $xy < xz$, then $y < z$.
- If $x^2y < x^2 z$, then $y < z$.
- If $x-y < x-z$, then $z < y$.
- $\quad \textrm{None}$
- $\quad \textrm{I and II only}$
- $\quad \textrm{II and III only}$
- $\quad \textrm{I and III only}$
- $\quad \textrm{I, II, and III}$
Video explanations to GMAT Official Guides 2023: GMAT Focus Edition
I just published my video explanations to all of the quantitative reasoning and data sufficiency questions that are part of the new 2023-2024 GMAT official guides for the redesigned GMAT Focus Edition test.
GMAT Data Sufficiency Question 57: Quadratic forms
Try the following GMAT data sufficiency question on dealing with quadratic equation forms in the context of data sufficiency.
Question 57:
What is the value of $x^4 + 2x^2 + 12$ ?
- (1) $x=2$ or $x=-2$
- (2) $x^4+2x^2 – 12 = 12$
- Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
- Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
- BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
- EACH statement ALONE is sufficient.
- Statements (1) and (2) TOGETHER are NOT sufficient.
GMAT Problem Solving Question 56: Decimals, exponents, and integers
Try the following GMAT Problem Solving question on how to turn a decimal product to a whole number.
Question 56:
What is the least integer value of $n$ for which the product $(0.004)(0.015)(0.0025)(10^n)$ is an integer ?
-
$\quad -10$
-
$\quad -8$
-
$\quad 0$
-
$\quad 8$
-
$\quad 10$