ab ba gmat number prop

AB
+BA
-----
AAC
In the correctly worked addition problem shown, where
the sum of the two-digit positive integers AB and BA is
the three-digit integer AAC, and A, B, and C are different digits, what is the units digit of the
integer AAC?
A. 9
B. 6
C. 3
D. 2
E. 0

permutation gmat

Of the three-digit positive integers that have no digits equal
to zero, how many have two digits that are equal to each
other and the remaining digit different from the other two?
A. 24
B. 36
C. 72
D. 144
E. 216

gmat exam coordinate

In the xy-plane, the point (-2, -3) is the center of a circle. The point (-2, 1) lies inside the circle and the point (4, -3) lies outside the circle. If the radius r of the circle is an integer, then r =

6
5
4
3
2

Gmat prep remainder

If n is a positive integer and r is the remainder when 4+7n is divided by 3 what is the value of r ?

(1) n+1 is divisible by 3
(2) n >20

GMAT Prep inequality

are x and y both positive?

1. 2x-2y=1
2. x/y >1

Hi Rich, thanks for reverting. It says fact 1 - 9th term is 81 so term shd be some constant on term 9 is 81 where as in your example you state the second term to be 81 itself 81. I do get the logic of number increase or decrease but its difficult when you show in fact 1 and two. can you please show ...

Combination MGA+MAT

Each year, a college admissions committee grants a certain number of $10,000 scholarships, $5,000 scholarships, and $1,000 scholarships. The number of scholarships granted at each level does not vary from year to year, and no student can receive more than one scholarship. This year, how many differe...

MGMAT circle area

A 10-by-6 inch piece of paper is used to form the lateral surface of a cylinder. If the entire piece of paper is used to make the lateral surface, which of the following must be true of the two possible cylinders that can be formed? The volume of the cylinder with height 10 is 60 / cubic inches grea...