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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.
	If $$\frac{1}{2}$$ of the money in a certain trust fund was invested in stocks, $$\frac{1}{4}$$ in bonds, $$\frac{1}{5}$$ in a mutual fund, and the remaining $10,000 in a government certificate, what was the total amount of the trust fund?
OG19-数学分册	If x and y are integers such that $$2 < x \leq 8$$ and $$2 < y \leq 9$$, what is the maximum value of $$\frac{1}{x}-\frac{x}{y}$$ ?
Ready4	If positive integers x and y are not both odd, which of the following must be even?
Ready4	If positive integers $x$ and $y$ are not both odd, which of the following must be even?
Ready4	If $a > <font color='#FE8080'>1</font>$ and $b > <font color='#FE8080'>1</font>$ , is $a > b$ ? (1) $\sqrt{a} > b$ (2) $\sqrt{b} < a$
Ready4	If Chris saved $400 of his earnings last month, how much did Chris earn last month? (1) Chris spent $\tfrac{<font color='#FE8080'>1</font>}{3}$ of his earnings last month on rent and saved $\tfrac{<font color='#FE8080'>1</font>}{4}$ of the remainder. (2) Last month, Chris paid three times as much in loan payments as he saved.
Ready4	If $p$ and $q$ are positive integers, what is the remainder when $2^{(4p+3q+<font color='#FE8080'>1</font>)}$ is divided by $10$ ? (1) $p=<font color='#FE8080'>1</font>$ (2) $q=<font color='#FE8080'>1</font>$
190310	$$\frac{4- \sqrt{28}}{\sqrt{9+7}}$$ = ?
	In a nationwide poll, N people were interviewed.If $$\frac{1}{4}$$ of them answered "yes" to question 1, and of those, $$\frac{1}{3}$$ answered "yes" to question 2, which of the following expressions represents the number of people interviewed who did not answer "yes" to both questions?
181215	$$r_{n+1}$$ - $$r_n$$=$$\frac{(-1)^{n}}{2^{n}}$$, what is the relationship of $$r_1$$,$$r_2$$,$$r_3$$？
Ready4	If $a$ and $b$ are positive integers and if $\frac{<font color='#FE8080'>1</font>}{a}+\frac{<font color='#FE8080'>1</font>}{b} < 2$ , which of the following must be true?
	If x is an integer, is 3x + 7 even?(1) (x – 5)(x + 1) = 0(2) x is a factor of 105.
OG17	In the fugure above, what is the value of z ?(1) x = y = 1(2) w = 2
PREP07 Test 2	If c and d are integers, is c even? (1) c(d + 1) is even. (2) (c + 2)(d + 4) is even.
OG19-数学分册	Is the integer p even? (1) The integer $$p^{2}+ 1$$ is odd. (2) The integer $$p + 2$$ is even.
OG19-数学分册	[y] denotes the greatest integer less than or equal toy. Is d < 1 ? (1) $$d=y-[y]$$ (2) $$[d] = 0$$
	If mand nare positive integers, is $$\sqrt{n-m}$$ an integer?(1)$$n > m + 15$$(2)$$n = m(m + 1)$$
	If $${n}=\sqrt{\frac{16}{81}}$$ what is the value of $$\sqrt{n}$$?
KMFPS	A box contains 100 balls, numbered from 1 to 100. If three balls are selected at random and with replacement from the box, what is the probability that the sum of the three numbers on the balls selected from the box will be odd?