Sum up the middle column and multiply by 7 for the number of rows, since each value in the middle column is the average for that row.

I checked and the OA on this is E.

I don't think knowing just the sign alone would help. If I understand the problem correctly we need the direction and the magnitude to help us extrapolate the Y intercept based on the information provided in statement 1. As for statement 2, knowing the direction alone still provides an infinite numb...

Actually I'm rethinking this going back through it with a common sense check by picking some numbers... maybe I've overthought the problem by trying to solve it with algebra Maybe 2) y<0 isn't so sufficient after all. Consider x=3, y=-1 Stem eqn will equal 2 which is a "YES" answer Conside...

I think jsl brings up a good point to remember about signs and direction of inequality when cross multiplying. But I also agree with some of the other posters and think B is sufficient. To simplify the "rephrase" of the questions stem asks: "Is y>0 or is y<0?" (factoring in that ...

Can you explain how you come up with 17?

You can just write out the multiples of 3 and add 1 and count them all up to cross check. 16 as an answer appears to check out ok.

Q1. You can solve this quickly by calculating the probability that heads will come up 3 times and understanding that P(E) = 1-P(not E).

So P(HHH) = (1/2)*(1/2)*(1/2) = 1/8
and P(not HHH) = 1-(1/8) or 7/8

Sure- every number will have at least 1 and itself as a factor. So if a=b then a can be a factor of b.