GMAT数学.ppt

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1、30 mins130 mins1275 mins3775 mins41VerbalQuantitativeIntergreted ReasoningAnalytical Writing GMATABCDAAA EG: In the correctly worked out addition problem at the right, each letter represents a different digit. What is the value of C?(A) 5 (B) 6 (C) 7 （D) 8 (E) 9EG: The organizer of a fair projected

2、a 25% increase in attendance this year over that of last year, but attendance this year actually decreased by 20%. What percent of the projected attendance was the actual attendance? (A) 45% (B) 56% (C) 64% （D) 75% (E) 80% EG: Each of the 25 people is enrolled in history, math, or both. If 20 are en

3、rolled in history and 18 are enrolled in math, how many are enrolled in both history and math?solution: (20-n)+n+(18-n)= 25 n=13 EG： List S consists of 10 consecutive odd integers, and list T consists of 5 consecutive even integers. If the least integer in S is 7 more than the least integer in T, how much greater is the average ( arithmetic mean ) of the integer in S than the average of the integers in T?(A) 2 (B) 7 (C) 8 (D) 12 (E) 22 球体的相关公式球体的相关公式球体表面积：A=4R2体积 V=4/3 *R3R ：球体半径