SAT 数学教程 I. 解题技巧训练 1 The units digit of 23333 is how much less than the hundredths digit of 1000567 (A) 1 (B) 2 (C) 3 (D) 4 (E) 5 2. What is the units digit of 1597365? 3. Bob has a pile of poker chips that he wants to arrange in even stacks. If he stacks them in piles of 10, he has 4 chips left over. If he stacks them in piles of 8, he has 2 chips left over. If Bob finally decides to stack the chips in only 2 stacks, how many chips could be in each stack? A. 14 B. 17 C. 18 D. 24 E. 34 4. If x and y are two different integers and the product 35xy is the square of an integer, which of the following could be equal to xy? A. 5 B.70 C. 105 D. 140 E. 350 5. If x2=y3 and (x-y)2=2x, then y could equal (A) 64 (B) 16 (C) 8 (D) 4 (E) 2 6. For positive integers p, t, x and y, if px=ty and x-y=3, which of the following CANNOT equal t? A. 1 B. 2 C. 4 D. 9 E. 25 7. If 3t-3>6s+9 and t-5s<12, and s is a positive integer less than 4, then t could be any of the following EXCEPT A. 6 B. 8 C. 10 D.12 E. 23 8. If n and p are integers greater than 1 and if p is a factor of both n+3 and n+10, what is the value of p? A. 3 B. 7 C. 10 D. 13 E. 30 9. If x is a positive integer greater than 1, and x3-4x is odd, then x must be (A) even (B) odd (C) prime (D) a factor of 8 (E) divisible by 8 10. If the graph above is that of f(x), which of the following could be f(x) A. f(x)= 3||x B. f(x)=|3| x C. f(x)=/x/+3 D. f(x)=|x+3| E. f(x)=|3x| 11. xy=x+y. If y>2, what are all possible values of x that satisfy the equation above? A. x<0, B. 02 II. 算术 ――对应知识点训练 1. 代数题 (1). Karl bought x bags of red...
