California gold rush

Prospecting for gold during the California gold rush was a relatively easy task, because of erosion, prehistoric glacier movement, and ancient, gold bearing riverbeds thrust to the surface by volcanic activity put gold literally within reach for anybody with a pan or shoved. A)because of erosion, pr...

Milk garde

3 grades of milk are 1 percent, 2 percent and 3 percent fat by volume. If x gallons of 1% grade, y gallons of 2% grade and z gallons of 3 % grade are mixed to give x+y+z gallons of 1.5% grade, what is x in terms of y & z?
1) y+3z
2) (y+z)/4
3) 2y+3z
4) 3y+2
5) 3y+4.5z

Data Sufficiency

if a, b, k & m are positive integers, is a^k a factor of b^m?
1) a is a factor of b
2) k<= m

Arithmetic

What is the smallest possible common multiple of two integers which are both greater than 250?

1) 251
2) 252
3) 502
4) 750
5) 884

Take a look at the denominator which is x-2
therefore, when we have x=2 the inequality will = 0
anything less than 2 will not satisfy the inequality.

So we have 4 integers less than 5 which satisfy the inequality.
the answer is D

Flaw Question

Reviewer: The Plain Truth, a biography of the philosopher Socrates, states that Socrates was both very wise and very poor. The book must be incorrect, because a man possessing such wisdom would surely find a way to avoid poverty. Which of the following best shows the most significant flaw in the rev...

Primarily, where is not the correct word to refer a phenomenon . Secondly, placing and would mean that the environmental changes are combining. the environmental changes allow XYZ. These are not two different elements which result from environmental change. the sentence means "the environmental...