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For a certain cylinder, the diameter equals the height. If every length in this cylinder is decreased by 60%, then to the nearest integer, by what percent does the volume decrease?

For a certain cylinder, the diameter equals the height. If every length in this cylinder is decreased by 60%, then to the nearest integer, by what percent does the volume decrease?

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Candice

GMAT/GRE/SAT 數學專業家教

The table above shows the results of a survey of 100 voters who each responded "Favorable" or "Unfavorable" or "Not Sure" when asked about their impressions of Candidate Mand of Candidate N. What was the number of voters who responded "Favorable" for both candidates?

The table above shows the results of a survey of 100 voters who each responded "Favorable" or "Unfavorable" or "Not Sure" when asked about their impressions of Candidate Mand of Candidate N. What was the number of voters who responded "Favorable" for both candidates?

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Candice

GMAT/GRE/SAT 數學專業家教

圖晝館只有 3 種書,history, mathematics, physics 20%借history 的人也借了 mathematics 35%借physics的人也借了mathematics 沒有人同時借history&physicst 僅借mathematics的有200,150的人exactly借了兩種書 借history的人有50 人，問僅借physics的人?

圖晝館只有 3 種書,history, mathematics, physics 20%借history 的人也借了 mathematics 35%借physics的人也借了mathematics 沒有人同時借history&physicst 僅借mathematics的有200,150的人exactly借了兩種書 借history的人有50 人，問僅借physics的人?

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Candice

GMAT/GRE/SAT 數學專業家教

三個醫院，每個醫院2個醫生2個護士，一共12個人坐一排，其中同一個醫院的醫生必須坐一起，同一個醫院的護士也要坐一起，不同 醫院的醫生不能坐一起，不同醫院的護士不能坐一起，問有多少種排列組合？

三個醫院，每個醫院2個醫生2個護士，一共12個人坐一排，其中同一個醫院的醫生必須坐一起，同一個醫院的護士也要坐一起，不同 醫院的醫生不能坐一起，不同醫院的護士不能坐一起，問有多少種排列組合？

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Candice

GMAT/GRE/SAT 數學專業家教

What percent of the students at University X are enrolled in a science course but are not enrolled in a biology course?

What percent of the students at University X are enrolled in a science course but are not enrolled in a biology course?

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Candice

GMAT/GRE/SAT 數學專業家教

List T consists of 30 positive decimals, none of which is an integer, and the sum of the 30 decimals is S. The estimated sum of the 30 decimals, E, is defined as follows. Each decimal in T whose tenths digit is even is rounded up to the nearest integer, and each decimal in T whose tenths digit is odd is rounded down to the nearest integer; E is the sum of the resulting integers. If 1/3 of the decimals in T have a tenths digit that is even, which of the following is a possible value of E - S ?

List T consists of 30 positive decimals, none of which is an integer, and the sum of the 30 decimals is S. The estimated sum of the 30 decimals, E, is defined as follows. Each decimal in T whose tenths digit is even is rounded up to the nearest integer, and each decimal in T whose tenths digit is odd is rounded down to the nearest integer; E is the sum of the resulting integers. If 1/3 of the decimals in T have a tenths digit that is even, which of the following is a possible value of E - S ?

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Candice

GMAT/GRE/SAT 數學專業家教

64 congruent cubs are assembled into a bigger cube. Of these 64 cubes,48 are painted red and 16 are painted white. What is the maximal fraction of the surface area of the bigger cube is red?

64 congruent cubs are assembled into a bigger cube. Of these 64 cubes,48 are painted red and 16 are painted white. What is the maximal fraction of the surface area of the bigger cube is red?

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Candice

GMAT/GRE/SAT 數學專業家教

For a certain cylinder, the diameter equals the height. If every length in this cylinder is decreased by 60%, then to the nearest integer, by what percent does the volume decrease?

For a certain cylinder, the diameter equals the height. If every length in this cylinder is decreased by 60%, then to the nearest integer, by what percent does the volume decrease?

#GMAT

Candice

GMAT/GRE/SAT 數學專業家教

AB is a 25-feet high lighthouse, CD is a person of 5 feet height, and DE is the shadow when the beam from lighthouse casts on the person. If this person is walking away from the lighthouse at speed of 2 m/s, what is the rate of change of the length if shadow?

AB is a 25-feet high lighthouse, CD is a person of 5 feet height, and DE is the shadow when the beam from lighthouse casts on the person. If this person is walking away from the lighthouse at speed of 2 m/s, what is the rate of change of the length if shadow?

#GMAT

Candice

GMAT/GRE/SAT 數學專業家教