12/27 North American

MissKoala 2002-12-28 09:03:47

AA: Megamart shop's business plan
AI: Team work is overemphezed; It is the person with the most commitment and energy to get things done

Math:

I saw many JJ today. some of them are included in the JJ summary of this week. Since I only reviewed current week's JJ summary, it's possible that what I mentioned here is already recorded by pioneers.

1, the mean, medium of history test score are given by two classes A and B. (there is a chart). If calculate the mean and median by counting two classes as a whole. Is the new mean bigger than the new median?

a, class A has 37 students, and class B has 42 students
b, the total number of of two class is 79.

My thought: New mean= (37*meanA+42*meanB)/79 (I forgot the accurate number of meanA and meanB, is given in tha chart)
But there is no way to calculate the new median by above two conditions. Thus, I choose E

2, 3 circles are tangent each other, given the area of the inner part, ask you to find out the radius.

My answer: 8 (the only thing you need to know is how to calculate the area. )

Actually, If you know how to workout the Math JJ, you should have full confidence to conquer the math part. Nothing is more difficult)

Verbal:

Reading Comp:

there is a new passage discussing the reason for the emergence of film stars. some general explanation presented in the first paragraph, in the following paragraph, author presents his view. 80 lines. Very detailed questions and not easy.

That's all I think need to mention. Reading comprehesion and speed are very important!

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