Joaquin M.

Engineer, Broadcaster and Tutor

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Question:

Two sets of 4 consecutive positive integers have exactly one integer in common. The sum of the integers in the set with greater numbers is how much greater than the sum of the integers in the other set?

Joaquin M.

Answer:

12

GRE

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Question:

The rate of a certain chemical reaction doubles for every 10 degree rise in temperature. What is greater: Twice the rate at 10° or half the rate at 30°?

Joaquin M.

Answer:

They are the same.

GMAT

TutorMe

Question:

Greg, Marcia, Peter, Jan, Bobby and Cindy go to a movie and sit next to each other in 6 adjacent seats in the front row of the theater. If Marcia and Jan will not sit next to each other, in how many ways different arrangements can the 6 people sit?

Joaquin M.

Answer:

480

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