2017PayPal暑期实习生笔试卷-数据科学家
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题型介绍
| 题型 | 单选题 |
|---|---|
| 数量 | 23 |
1.
10 people meet for a business lunch. ...
10 people meet for a business lunch. Each person shakes hands once with
each other person present. How many handshakes take place?
2.
A manager in a call center needs to d...
A manager in a call center needs to determine how many agents to
schedule next week. Based on previous data, she expects to get 7,940
calls next week. The following conditions apply:
On average, call center agents can handle seven calls an hour.
The call center is open for 10 hours, 5 days a week.
Full-time agents work 40 hours per week, but are only on calls
for 35 hours a week.
Part-time agents work 20 hours per week, but are only on calls
for 17 hours a week.
Which combination is the best to meet the scheduling needs?
3.
There are 40% students in a class are...
There are 40% students in a class are married, and there are 60% of the
students in the class are male. If 1/3 of the male students are married,
what’s the percentage of single female students in this class?
4.
Some of barbers have a beard. Therefo...
Some of barbers have a beard. Therefore, some people who have a
beard like dressing white clothes.
Which one is the truth can infer the correctness of the above
argument?
5.
Betty paints twice as fast as Dan. Wo...
Betty paints twice as fast as Dan. Working together, Dan and
Betty can paint 2,400 square feet in 4 hours. Another employee, Sue,
joined their painting team. Working together, Dan, Betty, and Sue can
paint 3,600 square feet in 3 hours.
If Sue works alone, how many square feet can she paint in 4 hours
and 34 minutes?
6.
A box contains 20 balls numbered from...
A box contains 20 balls numbered from 1 to 20 inclusive. If Jane removes
a ball at random and replaces it, and then Kate removes a ball at
random, what is the probability that both women removed the same ball?
7.
One circle can divide a plane into tw...
One circle can divide a plane into two parts. What is the maximum number
that 12 circles can divide the plane into?
8.
The probability that event A occurs i...
The probability that event A occurs is 0.4, and the probability that
events A and B both occur is 0.25. If the probability that either event
A or event B occurs is 0.6, what is the probability that event B will occur?
9.
In the first half of this year, from ...
In the first half of this year, from January to June, about three
million videocassette recorders were sold. This number is only 35
percent of the total number of videocassette recorders sold last year.
Therefore, total sales of videocassette recorders will almost
certainly be lower for this year than they were for last year.
Which of the following, if true, most seriously weakens the
conclusion above?
10.
Use below image to determine the corr...
Use below image to determine the correct response option from
those listed below. Select the response choice that replaces the
question mark.
11.
Contrary to the charges made by some ...
Contrary to the charges made by some of its opponents, the provisions of
the new deficit-reduction law for indiscriminate cuts in the federal
budget are justified. Opponents should remember that the New Deal pulled
this country out of great economic troubles even though some of its
programs were later found to be unconstitutional. The author’s method of
attacking the charges of certain opponents of the new deficit-reduction
law is to
12.
Contrary to the charges made by some ...
Contrary to the charges made by some of its opponents, the provisions of
the new deficit-reduction law for indiscriminate cuts in the federal
budget are justified. Opponents should remember that the New Deal pulled
this country out of great economic troubles even though some of its
programs were later found to be unconstitutional. The opponents could
effectively defend their position against the author’s strategy by
pointing out that
13.
Consider you are in a coin game with ...
Consider you are in a coin game with the following rules,
There are 2 players in the game - you and your rival.
There are random numbers of coins on the table, you and your
rival take turns to grab the coins.
Your rival takes the first turn.
Each person must grab at least one coin and up to 3 coins in
his/her turn.
The person left with the last coin on the table loses.
What’s the likelihood of you winning the game given both you and
your rival adopts the most optimized strategy?
14.
Five cards are dealt from a deck of 5...
Five cards are dealt from a deck of 52 cards. The probability of
obtaining 2 black cards and 3 red face cards is
15.
There is clear evidence that the mand...
There is clear evidence that the mandated use of safety seats by
children under age four has resulted in fewer child fatalities over the
past five years. Compared to the five-year period prior to the passage
of laws requiring the use of safety seats, fatalities of children under
age four have decreased by 30 percent. Which one of the following, if
true, most substantially strengthens the argument above?
16.
A snail is at the bottom of a 25 mete...
A snail is at the bottom of a 25 meters deep pit. Every day the snail
climbs 5 meters upwards, but at night it slides 4 meters back downwards.
How many days does it take before the snail reaches the top of the pit?
17.
Estimate the area of the smallest squ...
Estimate the area of the smallest square that can enclose the
regular hexagon shown below:
18.
Put 10 coins in a line with all the f...
Put 10 coins in a line with all the face side on. If only allow
the follow two movements,
(1) Flip the continuous 4 coins
(2) 5 continues coins OOOOO to XXOXX
How many movements is needed to make all the face side down?
19.
A certain club has 10 members, includ...
A certain club has 10 members, including Harry. One of the 10 members is
to be chosen at random to be the president, one of the remaining 9
members is to be chosen at random to be the secretary, and one of the
remaining 8 members is to be chosen at random to be the treasurer. What
is the probability that Harry will be either the member chosen to be the
secretary or the member chosen to be the treasurer?
20.
Crowding on Mooreville's subway frequ...
Crowding on Mooreville's subway frequently leads to delays,
because it is difficult for passengers to exit from the trains. Subway
ridership is projected to increase by 20 percent over the next 10
years. The Mooreville Transit Authority plans to increase the number
of daily train trips by only 5 percent over the same period. Officials
predict that this increase is sufficient to ensure that the incidence
of delays due to crowding does not increase.
Which of the following, if true, provides the strongest grounds
for the officials' prediction?
21.
Which of the following queries displa...
Which of the following queries displays the sum of all employee salaries
for those employees not making commission, for each job, including only
those sums greater than 2500?
22.
How do you select all the records fro...
How do you select all the records from a table named ‘Persons’ where the
‘LastName’ is alphabetically between (and including) ‘Huang’ and ‘Li’?
23.
With SQL, how can you insert a new re...
With SQL, how can you insert a new record into the "Persons" table?
