ETS Discrete tests

[user4173]

1.
How do I find which slope is steeper do I need to check the angle wrt the x axis?

2.

Once I take the Prime factors whats the next step?

3.

Calculating upto 20 would be time consuming is there any other way?

4.

In one of the videos greg told that the average is towards the tail
So how do I do it conceptually rather than Calculating all the values?

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@user4173

How do I find which slope is steeper do I need to check the angle wrt the x axis?

You can use reasoning here to show that the slope of line k must be greater than the slope of line l.

@user4173

Once I take the Prime factors whats the next step?

ETS OG Hard problem| Let S be the set of all positive integers n such that

[2021-10-14] Why cant we choose option D here pls answer

@user4173

Calculating upto 20 would be time consuming is there any other way?

Pattern recognition. Try writing down the first few terms.

@user4173

In one of the videos greg told that the average is towards the tail

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(hint: searching the question on Google is a useful tool)

[user4173]

Thanks a lot