【过往命中时间】2021年3月19日大陆地区线下

n≥3

a_n=3a_n-1+2a_n-2

a₅=5, a₇=17

Quantity A: a2

Quantity B: 0

A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.

【过往命中时间】2020年11月13日大陆地区线下；2020年11月20大陆地区线下；2020.08.06

0<P*Q<100, P and Q are both prime numbers，and P<Q，how many combinations of P and Q are there?

【过往命中时间】2021年3月19日大陆地区线下

Set A={1, 5, 9, 13, 10}

Set B={1, 5, 9, 13, 9}

Set C={1, 5, 9, 13, 7}

Set D={1, 5, 9, 13, 5}

Which of the following statement illustrates the exact order of standard deviation of these sets of numbers from the lowest to the greatest?

A. A<B<C<D

B. A<B=D<C

C. D<B<C<A

D. C<B=D<A

E.  A<D<B<C

【过往命中时间】2020.08.24北美地区线上

Set A={9, 13, 4, 2, 7}

Set B={9, 13, 4, 2, 9}

Set C={9, 13, 4, 2, 4}

Set D={9, 13, 4, 2, 6}

Which of the following statement illustrates the exact order of standard deviation of these sets of numbers from the lowest to the greatest?

A. A<B<C<D

B. A<B<D<C

C. D<B<C<A

D. C<B<D<A

E. A<D<B<C 

【过往命中时间】2020年12月13日大陆地区线下；2018.3

【词汇量】151

At a certain company, employees who earn $20.00 per hour will be given an increase of $1.00 per hour. For each of the other employees, either the employee will be given an increase of $1.00 per hour or the employee will be given a percent increase equal to the percent increase that will be given to the employees who earn $20.00 per hour, whichever results in a larger increase for that employee. 

Which of the following statements are true?Indicate all such statements.

A. An employee who earns less than $20.00 per hour will be given a percent increase that is greater than the percent increase that will be given to the employees who earn $20.00 per hour.

B. An employee who earns $22.00 per hour will be given an increase of $1.10 per hour.

C. An employee who earns $24.00 per hour will earn $25.20 per hour after the increase.

【过往命中时间】2020年11月04日北美地区线上；2020年10月25大陆地区线下；2020年5月

【词汇量】146

On her walk today, Emma walked along a straight path between the entrance to her house, H, and the entrance to library, L, passing a crosswalk sign, J, and then a crosswalk sign, K. First Emma walked from H to J and then turned around and walked back from J to H. Then she walked directly from H to L, stopping briefly at J and K on her way. The total distance that Emma walked from H to J and back from J to H was 2/9 of the distance that she walked directly from H to K and 1/6 of the distance that she walked directly from H to L. If Emma walked a total of 420 meters during her walk today. What was the distance, in meters, that she walked from K to L?

A. 84

B. 90

C. 100

D. 105

E. 120

【过往命中时间】2020年12月5日大陆地区线上

【词汇量】112

In a game, the cards in a certain deck are distributed to players one at a time until each player has the same number of cards and there are not enough cards left in the deck to distribute one more card to each player. The number of cards in the deck is between 60 and 100. If the cards in the deck are distributed to 5 players, 2 cards will be left in the deck. If the cards in the deck are distributed to 6 players, 4 cards will be left. If the cards in the deck are distributed to 7 players, how many cards will be left in the deck?

______cards