GMAT考试GWD数学难点整理.pdf

Math Section Q1: At the opening of a trading day at a certain stockexchange,the price per shareof stock K was$8. Ifthe price per share ofstock K was$9 at the closing ofthe day,whatwasthe percentincrease in the pricepershareof stockK forthat day? A. 1.4% B. 5.9% C. 11.1% 12.5% 23.6% Answer: Q2: Whichofthe following is equal to (212–26)/ (26–23)? A. 26+23 B. 26– 23 C. 29 23 2 Answer: Q3: What is the probability that a studentrandomly selected froma classof 60 studentswill be a male whohasbrownhair? (1) One-halfofthe studentshave brown hair. (2) One-third ofthe studentsare males. A.Statement (1)ALONE issufficient, butstatement (2)alone is notsufficient. B.Statement (2)ALONE is sufficient,but statement (1)alone is not sufficient. C.BOTH statementsTOGETHER are sufficient, butNEITHER statementALONE is sufficient. D.EACH statementALONE is sufficient. E. Statements(1)and (2)TOGETHER areNOTsufficient. Answer: Q4: John, Karen, and Luke collected cans of vegetables for a food drive. The number of cans that John collected was 1/2 the number of cans that Karen collected and 1/3 the number of cans that Luke collected. Thenumber ofcansthat Luke collected waswhatfraction of the totalnumber of cansthat John,Karen,and Luke collected? 1/5 1/3 2/5 1/2 2/3 Answer: Q5: The sides of a square region, measured to the nearest centimeters, are 6 centimeters long. The leastpossible value ofthe actualarea ofthe square region is 36.00sqcm 35.00sqcm 33.75sqcm 30.25sqcm 25.00sqcm Answer: Q6: Forall integersx and y,the operation is defined byxy = (x+2)2+ (y+3)2. What is the value of integert? t 2= 74 2 t= 80 A.Statement (1)ALONE issufficient, butstatement (2)alone is notsufficient. B.Statement (2)ALONE is sufficient,but statement (1)alone is not sufficient. C.BOTH statementsTOGETHER are sufficient, butNEITHER statementALONE is sufficient. D.EACH statementALONE is sufficient. E. Statements(1)and (2)TOGETHER