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Ready4

The lengths of all boards of type are exactly the same, and the lengths of all boards of type S are exactly the same. Is the length of 1 board of type greater than the length of 1 board of type ?

(1) The total length of 4 boards of type and 4 boards of type S is less than the total length of 3 boards of type and 5 boards of type .

(2) The total length of 3 boards of type and 2 boards of type S is less than the total length of 2 boards of type and 3 boards of type .
OG18-数学分册 What is the value of $$\frac{r}{2} + \frac{s}{2}$$?(1) $$\frac{r +s}{2} = 5$$(2) r + s =10
Ready4

Is equal to the median of the three positive integers , , and ?

(1)

(2)

OG17 If $$p \neq 0$$ and $$p-\frac{1-p^2}{p}$$ = $$\frac{r}{p}$$, the r =
R is the set of positive odd integers less than 50, and S is the set of the squares of the integers in R. How many elements does the intersection of R and S contain?
OG18-数学分册 How many integers n are there such that r < n < s?(1) s- r = 5(2) r and s are not integers.
If r and t are positive integers, what is the value of t?(1) $${t}^{r-1}={1}$$(2) $$r \neq 1$$
PREP07 Test 1 Is r to the right of -6 on the number line?(1) r is between -4 and -1 on the number line.(2) r is between -3 and 1 on the number line.
190113 Is the average of r, s, and t equal to their median? (1) The average of r, s, and t is s. (2) r < s < t
OG18-数学分册 If r and s are positive integers such that$$ ({2}^{r})(4^{s}) = 16$$, then $$2r + s =$$
If r, s, and t are positive integers, is r + s + t even?(1)r + s is even.(2)s + t is even.
OG12 OG15 If $${p}_{1}$$ and $${p}_{2}$$ are the populations and $${r}_{1}$$ and $${r}_{2}$$ are the numbers of representatives of District 1 and District 2, respectively, the ratio of the population to the number of representatives is greater for which of the two districts?(1)$${p}_{1} >{p}_{2}$$(2)$${r}_{2} >{r}_{1}$$
Ready4

If  is an integer and , which of the following CANNOT be a divisor of ?
Ready4

Set R consists of 17 consecutive integers. If −3 is the smallest integer in set R, what is the range of positive integers in set R?
190603 E, J, R and V take an exam and the total score of these four people is 400. What is the relationship between the score of J and the score of R?
(1) E+J=R+V+100
(2) E+R=J+V-80
OG12 If r is represented by the decimal 0.t5, what is the digit t?(1)$$r<\frac{1}{3}$$(2)$$r<\frac{1}{10}$$
PREP07 Test 2 If m and r are two numbers on a number line, what is the value of r ? (1) The distance between r and 0 is 3 times the distance between m and 0 . (2) 12 is halfway between m and r.
OG12 OG15 Any decimal that has only a finite number of nonzero digits is a terminating decimal. For example, 24, 0.82, and 5.096 are three terminating decimals. If r and s are positive integers and the ratio $$\frac r s $$ is expressed as a decimal, is $$\frac r s$$ a terminating decimal?(1)$$90 < r < 100$$(2)$$s = 4$$
Ready4

The subsets of the set are:

, , , ,

, , ,

and (the empty subset)

How many subsets of the set contain both and ?
OG12 OG15 OG16 OG17 Robots X, Y, and Z each assemble components at their respective constant rates. If $${r}_{x}$$ is the ratio of Robot X's constant rate to Robot Z's constant rate and $${r}_{y}$$ is the ratio of Robot Y's constant rate to Robot Z's constant rate, is Robot Z's constant rate the greatest of the three?(1)$${r}_{x}<{r}_{y}$$(2)$${r}_{y}< 1$$