SAT ? of the Day 10/22/08

Tuesday's Answer:
Correct Answer: E

Here's Why:
The intersection of sets S and T is the set of integers that are in S and also in T. Set S consists of all positive integers that are multiples of 7, and set T consists of all positive integers that are multiples of 13, so the intersection of S and T is the set of positive integers that are multiples of both 7 and 13. This is the set of all positive integers that are multiples of 7 × 13 = 91. There are an infinite number of positive integers that are multiples of 91, so there are more than thirteen integers in the intersection of S and T.

Difficulty: Medium
Question Type: Standard Multiple Choice
(Mathematics)
Today's ?

Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.

Since the explanations offered are ------- to the exposition, it would be unfair to treat them as ------- parts of the studies under consideration.

1. tangential . . subsidiary


2. irrelevant . . superfluous


3. referable . . correspondent


4. incidental . . essential


5. crucial . . immutable