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gprep

((2^(4-1))^2)/2^(3-2)

Where am I going wrong...
((2^(4-1))^2) = 2^(3*2) = 2^6/2^1 = 2^5

Sorry here are the answer choices
A 2^8
B 2^7
C 2^6
D 2^9
E 2^5

OA A

P(apple) = ??

Statement 1 P(orange) = 1/2, thus P(not orange)= 1/2 - not sufficient
Statement 2 P(Pear) = 3/10, thus P(not pear) = 7/10 not sufficient

Simple subtraction to get P(apple) = P(orange) 5/10-P(pear) 3/10 = 2/10, or 20%.

Choose C.

Statement 1 is irrelevant to the questions
Statement 2 says 2200 people of Westport have purchased it which is < 5000/2 = 2500; thus I'd go with B.

In 1999

In 1999, Company X's gross profit was what percent of its revenue?

1) In 1999 Company X's gross profit was 1/3 of its expenses
2) In 1999 Company X's expenses were 3/4 of its revenue

gprep OA - D

The greatest possible area

What is the greatest possible area of a triangle region with one vertex at the center of a circle of a radius of 1 and the other two vertices on the circle? A) sqrt(3)/4 B) 1/2 C) pi/4 D) 1 E) sqrt(2) Gprep OA - B I got it right, but only by guessing - can someone put some math behind this problem f...

A

x<0, and (x^2)<(1/100), thus x<-(1/10), reciprocal of this is -10

x<-10

(5/2)*6 = 15 batches*3 bars/batch = 45 bars