|
第一期
|
There are three equations of x, y, and z. What is the value of x+y+z?
(1)-x+y+z=-10
(2)-x-y+z=-10
(3)-x+y-z=-10
|
|
181215
|
x,y,z are three consecutive odd integers. x < y < z. What`s the values of x,y,z, respectively?
1: 2y = x+z
2: x,y,z are prime numbers.
|
|
300难题
|
If x and z are integers: is x + $$z^{2}$$ odd?
1.x is odd and z is even.
2.x -z is odd.
|
|
190321
|
x=(x+y+z+w)/4 -1, y = (x+y+z+w)/3 - 3 , z=(x+y+z+w)/4 , w=16.x=?
|
|
PREP07 Test 1
|
Is z equal to the median of the three positive integers x, y, and z ?(1) x < y + z(2) y = z
|
|
|
Is z equal to the median of the three positive integers x, y, and z ?(1) x < y + z(2) y = z
|
|
PREP07 Test 2
|
If a < y < z < b, is |y - a | < |y - b | ? (1) |z - a | < |z - b | (2) |y - a | < |z - b |
|
|
191020
|
Is |x-y+z|>|x+y-z|?
(1)xz
(2)x=0
|
|
Manhattan
|
Is x + y > z ?(1) z > y(2) z > x
|
|
190302
|
x+y=z. Is y > 0?
1:y=x+z
2:x=y+z
|
|
|
What is the value of $${x}^{2}{y}{z}+{x}{y}^{2}{z}+{x}{y}{z}^{2}$$(1) x+y+z=18(2) xyz=10
|
|
Ready4
|
If  is an integer and  , what is the value of ?
(1) is a factor of  .
(2) is a factor of  .
|
|
181215
|
w=3x, z=3x-y. Is w>z?
1:z-y=9
2:x=3
|
|
190302
|
$$x^{2}$$+$$y^{2}$$+$$z^{2}$$=16,xy+yz+xz=8,x,y,z > 0 .x+y+z=?
|
|
|
If w, x, y, and z are integers such that 1 ＜ w ＜ x ＜ y ＜ z and wxyz = 462, then z =?
|
|
PREP07 Test 2
|
If zy < xy < 0, is |x - z | + |x | = |z | ?(1) z < x (2) y > 0
|
|
Ready4
|
Z is a positive integer. Is Z even?
(1) ZZ+1 is even
(2) (Z + 1)Z is odd
|
|
300难题
|
If x + y + z > 0, is z > 1 ?
1.z > x + y + 1
2.x + y + 1 < 0
|
|
190113
|
If x+y=z, what is the value of y?
(1)y=x+z
(2)x=y+z
|
|
190302
|
x,y,z are positive integers. x+y+z=?
1:xyz=251
2:x-y-z=0
|