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题目内容
当题目问“A is how much percent greater than B?”时,正确的计算公式应该是?
当题目提到“The number of people who register for the course each month is at least 5 and at most 30",正确的理解是?
维度四:数学概念

“1”是质数吗?
余数一定要小于除数吗?
当题干提到事件A与事件B是相互独立的(independent),请问事件A与事件B能同时发生吗?
维度五:数学公式

连续整数的数个数公式:从整数a到整数b,包含两端,共计有多少个整数?
多边形内角和公式:如果n多边形有n条边,那么这个n多边形所有内角度数和是?
组合数公式:以下哪个是正确的组合数的计算公式?
维度六:解题思维

What is the tens digit of $$21^{(3^{50})}$$?
维度二:逻辑能力

Holston characterized a colonial situation as an aggregation of activities and a conjunction of outcomes that, though _____ and at times coordinated, were usually diffuse, disorganized, and even contradictory.
Which of the following numbers CANNOT be the value of $$\frac{a}{|a|}+\frac{b}{|b|}+\frac{c}{|c|}$$, where $$a$$, $$b$$, and $$c$$ are nonzero numbers?
The integers $$s$$, $$t$$, and $$u$$ are each greater than $$1$$.

Quantity A

The average (arithmetic mean) of $$s$$, $$t$$, $$u$$, $$\frac{1}{s}$$, $$\frac{1}{t}$$, and $$\frac{1}{u}$$

Quantity B

$$1$$


For all integers $$k \gt 1$$, $$P_{k}=\frac{k+1}{k}$$. For all integers $$k \gt 2$$, $$b_{k}=P_{k}-P_{k-1}$$. The integer $$n$$ is greater than $$2$$.

Quantity A

$$b_{n}$$

Quantity B

$$\frac{-1}{n^2-n}$$


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