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190603 K equals to 1 plus the product of all prime numbers from 2 to 29, inclusive, which of the following statement about k is true?
I. k can be divisible by prime numbers within 2-29
II. k is divisible by 30
III. k can be divisible by a prime number greater than 29
Is $$x > k$$?(1)$${2}^{x}*{2}^{k}={4}$$(2)$${9}^{x}*{3}^{k}={81}$$
190113 If positive integer k is larger than 1. Is $$\frac{k}{3}$$ an integer? (1)$$\frac{12}{k}$$ is an integer. (2)$$\frac{81}{k}$$ is an integer.
300难题 In the rectangular coordinate system, line k passes through the point (n, - 1). Is the slope of line k greater than zero? 1.Line k passes through the origin. 2.Line k passes through the point (1,n+ 2).
Magoosh k is a positive number. If k is twice its reciprocal, and j is twice k, then jk =
190124 What is the unit digit number of $$2^{k}$$ ? 1: k can be divided by 10. 2: k can be divided by 4.
PREP07 Test 2 If k is a positive integer, is k the square of an integer?(1) k is divisible by 4.(2) k is divisible by exactly 4 different prime numbers.
If $$\frac{k}{60125}={0.001}$$, what is the units digit of k?
How many prime numbers are there strictly greater than 5 and less than the integer k?1. 20 < k < 342. 17 < k < 33
PREP07 Test 2 If m and n are positive integers and mn = k, is m + n = k + 1 ? (1) m = 1 (2) k is a prime number.
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If <font color='#FE8080'>k</font>=5p, where p is a prime number greater than , how many different positive even divisors does <font color='#FE8080'>k</font> have, including <font color='#FE8080'>k</font>?
If n and k are greater than zero, is$$\frac n k$$ an integer(1)n and k are both integers.(2)$${n}^{2}$$ and $${k}^{2}$$ are both integers.
数论 If k, m, and p are integers, is k - m - p odd?(1)k and m are even and p is odd.(2)k, m, and p are consecutive integers.
Magoosh If line k in the xy–coordinate plane has slope$$\frac {-3}{2}$$, does line k pass through the point (12, -13)?(1) The point (6, -2) lies on line k.(2) The point (2, 4) lies on line k.
PREP07 Test 1 The sequence $$a_1, a_2, a_3, . . . ,a_n$$ of n integers is such that $$a_k = k$$ if k is odd and $$a_k = -a_{k-1}$$ if k is even. Is the sum of the terms in the sequence positive?(1) n is odd.(2) $$a_n$$ is positive.
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If and are sets of integers,  denotes the set of integers that belong to set or to set , but not to both. If consists of 20 integers, consists of 16 integers, and 14 integers are in both and , then  consists of how many integers?
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If k is a positive integer, what is the hundreds digit of k?

  1. The thousands digit of 10k is 7.
  2. The hundreds digit of k+1 is 7.
PREP07 Test 2 If @ denotes one of two arithmetic operations, addition or multiplication, and if k is an integer, what is the value of 3 @ k ? (1) 2 @ k = 3(2) 1 @ 0 = k
PREP07 Test 2 If k is a line in the xy-plane, what is the slope of k ?(1) The x-intercept of k is 2. (2) The y-intercept of k is 3.
OG12 OG15 OG16 OG17 If T = $$\frac{5}{9}$$(K - 32), and if T = 290, then K =