GMAT Prep Exam Practice Test 1 100%
Correct Answers
WHEN YOU SEE:
-An Isocleles Triangle with a hypotenuse that doesn't have the √2 next to it
-How do you do that quick equation
ex: ISO triangle : Hypotenuse = 16 - correct answer--Divide the hypotenuse by 2 and
multiple by √2
.
ex: 16 = 16/2 = 8*√2 = 8√2
When you see:
-An abstract sequence question
-such as...
ex: if the terms of sequence t1,t2,t3,...tn, what is the value of n?
1. The sum of the n terms is 3,124
2. The average (arithmetic mean) of the n terms is 4 - correct answer--Think about what
the information they give you in the prompts and try to decode what they are asking for
-They give you both the total sum and average
-From here you will be able to put them together to find # over terms which would equal
n
When you see:
-you are picking from 4 choices and making 2 picks
-asking for probability for picking 1 specific pair
ex: If two of the four expressions x+y, x+5y, x-y, and 5x-y are chosen at random, what is
the probablity that their product will be the form of x²-(by)² - correct answer--Set up
probability formula
-The bottom will be 4 slots and 2 picks (C:n-4,k-2) which will give you 6
-You know that only 1 of the pairs will give you what you are looking for so the answer is
1/6
When you see:
-A squared equation over a difference of squares equation
ex: if xy=1, what is the value of (2^(x+y)²)/(2^(x-y)²)? - correct answer--Think to subtract
the bottom from the top of the bottom is positive
-If the bottom is negative, add it to the top
Correct Answers
WHEN YOU SEE:
-An Isocleles Triangle with a hypotenuse that doesn't have the √2 next to it
-How do you do that quick equation
ex: ISO triangle : Hypotenuse = 16 - correct answer--Divide the hypotenuse by 2 and
multiple by √2
.
ex: 16 = 16/2 = 8*√2 = 8√2
When you see:
-An abstract sequence question
-such as...
ex: if the terms of sequence t1,t2,t3,...tn, what is the value of n?
1. The sum of the n terms is 3,124
2. The average (arithmetic mean) of the n terms is 4 - correct answer--Think about what
the information they give you in the prompts and try to decode what they are asking for
-They give you both the total sum and average
-From here you will be able to put them together to find # over terms which would equal
n
When you see:
-you are picking from 4 choices and making 2 picks
-asking for probability for picking 1 specific pair
ex: If two of the four expressions x+y, x+5y, x-y, and 5x-y are chosen at random, what is
the probablity that their product will be the form of x²-(by)² - correct answer--Set up
probability formula
-The bottom will be 4 slots and 2 picks (C:n-4,k-2) which will give you 6
-You know that only 1 of the pairs will give you what you are looking for so the answer is
1/6
When you see:
-A squared equation over a difference of squares equation
ex: if xy=1, what is the value of (2^(x+y)²)/(2^(x-y)²)? - correct answer--Think to subtract
the bottom from the top of the bottom is positive
-If the bottom is negative, add it to the top
