Questions That Could Make You Waste Your Time

EvanJ

The ACT had an inequality where the answers were number lines. The fifth and final choice was a blank line with the words "empty set." That was the correct answer because the inequality had absolute value < or = -1, so working with x in the absolute value was a waste of time.

topsquark

Math Team
The ACT had an inequality where the answers were number lines. The fifth and final choice was a blank line with the words "empty set." That was the correct answer because the inequality had absolute value < or = -1, so working with x in the absolute value was a waste of time.
I take great joy in being the first to respond to this comment in the following manner: WFT are you talking about??

Could you please post the whole question?

-Dan

1 person

SDK

The ACT had an inequality where the answers were number lines. The fifth and final choice was a blank line with the words "empty set." That was the correct answer because the inequality had absolute value < or = -1, so working with x in the absolute value was a waste of time.
ok

tahirimanov19

I have a perfect example of topics that can waste your time.

idontknow

Wasting the 4th-dimension . lol

tahirimanov19

Wasting the 4th-dimension . lol
A mathematician and his best friend, an engineer, attend a public lecture on geometry in thirteen-dimensional space. "How did you like it?" the mathematician wants to know after the talk.

"My head's spinning", the engineer confesses. "How can you develop any intuition for thirteen-dimensional space?"

"Well, it's not even difficult. All I do is visualize the situation in arbitrary N-dimensional space and then set N = 13."

1 person

EvanJ

I take great joy in being the first to respond to this comment in the following manner: WFT are you talking about??

Could you please post the whole question?

-Dan
I don't have the question, but it was in the form of abs(3x - 2) < or = -1.

skeeter

Math Team
I don't have the question, but it was in the form of abs(3x - 2) < or = -1.
Problems like that are thrown in to separate â€œcritical thinkersâ€ from the â€œnumerical processorsâ€.

DarnItJimImAnEngineer

Agreed. If you understand absolute value and â‰¤, and are thinking about the problem statement, the answer is obvious and doesn't waste your time. If you aren't thinking about these things, the problem is training you to do so, and again, not really a waste of your time.

Math Team