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Andrew Geller

Andrew Geller is a top GMAT tutor based out of New York City. Throughout his career he has successfully taught people from many different backgrounds, countries, and starting scores.

If there are fewer than 8 zeros between the decimal point and the first nonzero digit in the decimal expansion of (t/1,000)⁴ which of the following numbers could be the value of t?

If there are fewer than 8 zeros between the decimal point and the first nonzero digit in the decimal expansion of (t/1,000)4 which of the following numbers could be the value of t? I. 3 II.5 III. 9 A. None B. I only C. II only D. III only E. II and III Correct Answer:

If there are fewer than 8 zeros between the decimal point and the first nonzero digit in the decimal expansion of (t/1,000)⁴ which of the following numbers could be the value of t? Read the Full Article »

The outer dimensions of a closed rectangular cardboard box are 8 centimeters by 10 centimeters by 12 centimeters, and the six sides of the box are uniformly 1/2 centimeter thick. A closed canister in the shape of a right circular cylinder is to be placed inside the box so that it stands upright when the box rests on one of its sides. Of all such canisters that would fit, what is the outer radius, in centimeters, of the canister that occupies the maximum volume?

The outer dimensions of a closed rectangular cardboard box are 8 centimeters by 10 centimeters by 12 centimeters, and the six sides of the box are uniformly 1/2 centimeter thick. A closed canister in the shape of a right circular cylinder is to be placed inside the box so that it stands upright when the

The outer dimensions of a closed rectangular cardboard box are 8 centimeters by 10 centimeters by 12 centimeters, and the six sides of the box are uniformly 1/2 centimeter thick. A closed canister in the shape of a right circular cylinder is to be placed inside the box so that it stands upright when the box rests on one of its sides. Of all such canisters that would fit, what is the outer radius, in centimeters, of the canister that occupies the maximum volume? Read the Full Article »

In the figure above, ABCD is a parallelogram and E is the midpoint of side AD. The area of triangular region ABE is what fraction of the area of quadrilateral region BCDE?

In the figure above, ABCD is a parallelogram and E is the midpoint of side AD. The area of triangular region ABE is what fraction of the area of quadrilateral region BCDE? A. 1/2 B. 1/3 C. 1/4 D. 1/5 E. 1/6 Correct Answer: B Full explanation coming soon. Send us a note if you’d like

In the figure above, ABCD is a parallelogram and E is the midpoint of side AD. The area of triangular region ABE is what fraction of the area of quadrilateral region BCDE? Read the Full Article »

The window in the figure above consists of a rectangle and a semicircle with dimensions as shown. What is the area, in square feet, of the window?

The window in the figure above consists of a rectangle and a semicircle with dimensions as shown. What is the area, in square feet, of the window? A. 40 + 8π B. 40 + 2π C. 32 + 8π D. 32 + 4π E. 32 + 2π Correct Answer: E You’ll find tons of practice

The window in the figure above consists of a rectangle and a semicircle with dimensions as shown. What is the area, in square feet, of the window? Read the Full Article »