# Finish our GMAT math course in 30 days! The IVY (PS) and Variable approaches (DS) will blow your mind! They will completely change the way you approach GMAT math questions! You have to see it to believe it! It’s the revolutionary way of solving GMAT math questions along with the must-know math basics and formulas!

• 01. Answer C (3 variables, 1 equation)
• 02. Answer C (2 variables)
• 03. Answer C (4 variables, 2 equations)
• 04. Answer C (3 variables, 1 equation)
• 05. Answer C (2 variables, 2 by 2)
• 06. Answer C (2 variables)
• 07. Answer C (2 variables)
• 08. Answer C (2 variables)
• 09. Answer E (6 variables, 2 equations)
• 10. Answer E (6 variables, 2 equations)
• 11. Answer E (4 variables, 1 equation)
• 12. Answer E (4 variables)
• 13. Answer E (3 variables)
• 14. Answer E (4 variables, 2 by 2)
• 15. Answer D (1 variable)
• 16. Answer D (2 variables, 1 equation)
• 17. Answer D (1 variable, 2 by 2)
• 18. Answer D (4 variables, 3 equations)
• 19. Answer D (1 variable)
• 20. Answer B (Modify the question)
• 01. Local ratio and LCM
• 02. Local ratio and 2 by 2
• 03. Axiom ①
• 04. Axiom ①
• 05. Axiom ①
• 06. Axiom ③
• 07. Each Each Together
• 08. Ignore Square
• 09. Percent change
• 10. Work Rate
• 01. Questions 231-235
• 02. Questions 236-239
• 03. Questions 240-244
• 04. Questions 245-251
• 05. Questions 252-257
• 06. Questions 258-263
• 07. Questions 264-267
• 01. Questions 01-06
• 02. Questions 07-09
• 03. Questions 10-14
• 04. Questions 15-20
• 05. Questions 21-25
• 06. Questions 26-31
• 07. Questions 32-37
• 01. Geometry 01-02
• 02. Geometry 03-04
• 03. Geometry 05-06
• 04. Geometry 07-08
• 05. Geometry 09-10
• 06. Geometry 11-12
• 07. Geometry 13-14
• 08. Geometry 15-16
• 09. Geometry 17-18
• 10. Geometry 19-20
• 11. Geometry 21
• 01. Expressions, Exponent
• 02. Equation
• 03. Arithmetic Algebra
• 04. Inequality
• 05-1 Integer
• 05-2 Integer
• 06. Statistics, 07. Set
• 07. Ratio, Rate, Proportion
• 08. Probability
• 09. Sequence

### [Variable Approach]

The most fundamental part of “the Variable Approach” is that the most likely answer can be figured out simply after counting and matching the number of Variables with the number of Equations from the original conditions. This means that conditions 1 and 2 do not need to be calculated each time to find the answer correctly. This easy-to-use approach can be applied up to 90% of all DS problems.