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PREP07 Test 1 If y and z are integers, is y(z + 1) odd?(1)y is odd.(2)z is even.
If X, Y, and Z are positive integers, is Y >X?(1) $${Y}^{2}={X}{Z}$$(2) Z-X >0
If the product of the integers w, x, y, and z is 770, and if 1＜w＜x＜y＜z, what is the value of w + z ?
PREP07 Test 2 If x, y, and z are integers, is x + y + 2z even?(1) x + z is even.(2) y + z is even.
OG18-定量推理 If x, y, and z are three integers, are they consecutive integers?(1) z - x = 2(2) x < y < z
OG19-定量推理 If $$w + z = 28$$, what is the value of wz? (1) wand z are positive integers. (2) wand z are consecutive odd integers.
OG19-定量推理 The average (arithmetic mean) of the positive integers x, y, and z is 3. If x < y < z, what is the greatest possible value of z?
OG12 OG15 OG16 If x, y, and z are positive integers, is x - y odd?(1)$$x = z^2$$(2)$$y = (z-1)^2$$
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denotes the least integer greater than or equal to . Is ?

(1)

(2)

 
190302 The sum of x, y, and z is even. Can xyz be divided by 4? 1: x=y=z 2: x,y,z are even.
PREP07 Test 1 If x, and z are positive integers, what is the remainder when 1OOx + 10y + z is divided by 7 ?(1) y = 6(2)z = 3
OG18-定量推理 If w + z = 28, what is the value of wz?(1) w and z are positive integers(2) w and z are consecutive odd integers
OG18-定量推理 For all z, [z] denotes the least integer greater than or equal to z. Is [x] = 0?(1) - 1 < x < - 0.01(2) [x + 0.5] = 1
OG19-定量推理 For all z, [z]denotes the least integer greater than or equal to z. Is [$$x] = 0$$ ? (1) - 1 < x < - 0.1 (2) $$[x+0.5]= 1$$
If Z is an infinite subset of real numbers, is there a number in Z that is greater than every other number in Z?1. Every number in Z is divisible by 5.2. Every number in Z is a negative multiple of a prime number.
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If is an integer, and , is even?

(1) and are both integers

(2) is odd
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Mixture contains 25% alcohol, Mixture contains 10% alcohol, and Mixture contains 15% alcohol. If liters of Mixture , liters of Mixture , and liters of Mixture are mixed to give liters of mixture that contain 20% alcohol, what is in terms of and ?
190124 Is |x-y| > |x-z|? 1:|y| > |z| 2:x < 0
190310 Is |x-y|>|x-z|?
1:|y|>|z|
2:x<0
Is |x| =y-z?(1)x+y=z(2)x ＜ 0