real sat maths for 10.12

minxUID: 108897

it's not really easy to get 800 in math,unless u make sure that u know every math word verywell.
, |/ z0 z1 ?: [& }i stil remember some of the questions on my test today
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6 [3 A& R% ?" f& |1 v  Q. ]---if a number n is picked out from a set of numbers.the probability of___is 1/2.

1,n is bigger than the mean of all the numbers.
+ N' ]. g9 Z4 j5 y4 Y, n2,n is even number
3,n is bigger than the median of the numbers
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a,1,2
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4 y3 Q" j' R  Ywel~~~it's easy anyway as long as u know the difference between "mean "and "median"
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" A7 f8 q: l3 G" T, ^) o/ f: tthis is from princton review of sample SAT
  R1 S  I; ]: }" V) r! F-------combining a cup of vinegar and a cup of oil makes a 2-cup-dressing sauce.if the yield is 4 cups and the ratio of vinegar in volumn is 1/3,what's the fraction of the original dressing that is vinegar?

6 E( i2 V0 r4 }) C. O) ?2 c' b4 a' R+ Y(it's easy too, but really tricky in words, be cautious)
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minxUID: 108897

d`~n is bigger than the median
- U$ S  v* R5 `, I3 |4 mcoz the median is the number lies in the middle of the observation.
5 X! z/ H. A. P+ x; v; dwhile mean is like the average which is not resistant to outliers