[原创]GMATPrep 数学讨论题库汇总(II)

276。 r         s      t

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

on the number line shown, is zero halfway between r and s?

1)s is to the right of zero

2)the distance between t and r is the same as the distance between t and -s

r,s,t的大概位置是这样的，答案说是c，我怎么觉得b就可以了

279. 一个城市有132000人分到11个选区，没有哪个选区比别人多10%，问最少人数选区至少有几人？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

答案为11100

280. X 为正数 X2（平方）<1/x<2x可能成立？

答案为可能，我认为不可能。

281. 如果m,r是数轴上的数，求r?

1 r 离0的距离是m离0的距离的3倍。

2 12 is halfway between m and r.

答案为E.C为何不可？

303。 在平面坐标上有两条线L和K,它们的交点在(4,3),问两条直线斜率乘积是否为负

(1) 在X轴上的截距之乘积为正

(2)在Y轴上的截距之乘积为负

答案C

304. 有R个红球,W个白球,B个黑球,任意选一个,问选到是红球的概率大于选到是白球的概率吗?

(1) R/(B+W) >W/(B+R)

(2) 忘了(不过我知道不充分)

答案A

308. A certain bastket contains 10 apples , 7 of which are red and 3 of whcih are green. If 3 different apple are to be selected at random from the basket, what is the probability that 2 of the apples aelected will be red and 1 will be green?

答案是21/40

这道题应该不难，可是算不出答案, 这样想哪里有错吗, 先挑一个绿的, 概率是C(3,1)/C(10,1), 乘以红的C(7,2)/C(9,2), c

309. For Manufacturer M, the cost C of producing X Units of its product per month is given by c=kx+t, where c is in dollars and k and t are constants. Last month if Manufacturer M produced 1,000 units of its product and sold all the units for k+60 dollars each, what was Manufacturer M's gross profit on the 1,000 units?

1) Last month, Manufacturer M's revenue from the sale of the 1,000 units was 150,000

2) Manufacturer M's cost of producting 500 Units in a month is 45,000 less than its cost of producing 1,ooo units in a month

c=kx+t    last month cost=1000k+t     profit: 1000(k+60) -(1000k+t) =60000-t  ,

(1)150000=1000k+t     (2) (1000k+t)-(500k+t)=45000   得出k ,  由(1)得出t,  profit可以算出,c   可是答案是e,为什么?哪里不对?

答案是21/40

这道题应该不难，可是算不出答案, 这样想哪里有错吗, 先挑一个绿的, 概率是C(3,1)/C(10,1), 乘以红的C(7,2)/C(9,2), c

309. For Manufacturer M, the cost C of producing X Units of its product per month is given by c=kx+t, where c is in dollars and k and t are constants. Last month if Manufacturer M produced 1,000 units of its product and sold all the units for k+60 dollars each, what was Manufacturer M's gross profit on the 1,000 units?

1) Last month, Manufacturer M's revenue from the sale of the 1,000 units was 150,000

2) Manufacturer M's cost of producting 500 Units in a month is 45,000 less than its cost of producing 1,ooo units in a month

c=kx+t    last month cost=1000k+t     profit: 1000(k+60) -(1000k+t) =60000-t  ,

(1)150000=1000k+t     (2) (1000k+t)-(500k+t)=45000   得出k ,  由(1)得出t,  profit可以算出,c   可是答案是e,为什么?哪里不对?

答案是21/40

这道题应该不难，可是算不出答案, 这样想哪里有错吗, 先挑一个绿的, 概率是C(3,1)/C(10,1), 乘以红的C(7,2)/C(9,2), c

309. For Manufacturer M, the cost C of producing X Units of its product per month is given by c=kx+t, where c is in dollars and k and t are constants. Last month if Manufacturer M produced 1,000 units of its product and sold all the units for k+60 dollars each, what was Manufacturer M's gross profit on the 1,000 units?

1) Last month, Manufacturer M's revenue from the sale of the 1,000 units was 150,000

2) Manufacturer M's cost of producting 500 Units in a month is 45,000 less than its cost of producing 1,ooo units in a month

c=kx+t    last month cost=1000k+t     profit: 1000(k+60) -(1000k+t) =60000-t  ,

(1)150000=1000k+t     (2) (1000k+t)-(500k+t)=45000   得出k ,  由(1)得出t,  profit可以算出,c   可是答案是e,为什么?哪里不对?

答案是21/40

这道题应该不难，可是算不出答案, 这样想哪里有错吗, 先挑一个绿的, 概率是C(3,1)/C(10,1), 乘以红的C(7,2)/C(9,2), c

310。AT a dinner party,5 people are to be seated around a circular table,two seating arrangements are considered different only when the position of the people are different relative to each other.what is hte total number of different possible seating arrangements for the group?

the answer is 24, but I figure out it's 120?