# 15 mil

Preguntas de entrevista para Program Manager compartidas por los candidatos

## Principales preguntas de entrevista

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A un Senior Program Manager le preguntaron...24 de marzo de 2020

### Why Amazon?

58 respuestas

I need money 💸

Am happy to i join amazon

“I really believe the vision that making Amazon the Earth’s most customer-centric company more than anyone and I wanted to be a part of it on it’s pursuit which is the reason and motivation driving me to join Amazon.” Menos

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### You are on a game show. There are three doors, behind one of which is a prize and the other two is a chunk of coal, and the host knows which door holds the prize. You choose door #1. Before it is opened, the host opens door #3 and reveals a lump of coal. You have the choice to stick with the door you chose originally or switch to door #2. What do you do?

18 respuestas

Interview Candidate and Anonymous are right. This is also known as the Monte Hall problem Menos

Your choice splits the doors in two sets. Set A contains the door you selected, and the probability that is a prize behind this door is 1/3. The set B contains all remaining doors, and the probability that the winning door is somewhere in there is 2/3. By removing one door, which all have the success probability of zero because there's coal behind them, from set B, only one door remains in B, but the overall probability for success in set B is still 2/3. Therefore you must switch. Menos

Interview candidate is right. You got 1/3 chance that prize is behind door #1 and you lose if you switch. And you got 2/3 chance that prize is behind either door #2 or #3. Since the host will always eliminate the wrong one. 2/3 chance will be allocated on the left one. Menos

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### Consider a lift lobby where people are waiting for the lift. Now when lift arrives people get in irrespective of who came first. Thus, the person who came first keeps waiting and others keep getting in. Design a lift system which can solve the problem of this person.

16 respuestas

Have a two way door opening in the lift. But always entry should be in one side and exit other side. Menos

Sorry for my previous response. Wrongly understood the question

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### You are on a desert island, and all you have is a pair of dice. You know that a plane flies over the island on the 30th day of the month. Using the dice, how can you make a calendar that always tells you the day of the month?

12 respuestas

Using two digits in "base 6" you can count up to 35. Typically base 6 would use digits 0 to 5, but in this case you can adjust and use 1 through 6. Menos

How about... Dice 1: each pip equals 1 day: 1 pip =1 day, 2 pips = 2 days, etc. Dice 2 each pip equals 5 days: 1 pip = 5 days, 2 pips = 10 days 3 pips = 15 days etc. Die 2 is always to the left of Die 1. For days less than or equal to 5 use 1 die. When counting a day that is a multiple of 5 (days 5,10,15 etc.) count day by putting Die to 5 pips and Die 2 to the remaining number of days. Menos

@Rikesh: How will you indicate 17, 18, 19, 20, 27, 28, 29, 30. Here is what i think... D D 6*0+1=1 6*0+2=2 6*0+3=3 .. 6*0+6=6 6*1+1=7 6*1+2=8 .. 6*1+6=12 6*2+1=13 6*2+2=14 .. 6*2+6=18 6*3+1=19 6*3+2=20 Menos

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### what is angle between hour hand and minute hand in clock at 4:20 ? what is biggest conflict management you have handled in your work place

11 respuestas

IF min's hand rotates for 360 deg, hr's hand rotates for 30 deg - so for 60 min - hr's hand rotates for 30 deg. For 1 min it rotates for 0.5 degree. Hence, for 20 min it rotates for 10 degrees. The angle between hr's hand and min's hand should be 10 deg. Menos

in every 60 minutes hour hand moves 30 degrees. so at 14:20 ( it means that 20 minutes have past since last turn) hour hand moves 20*30/60 = 10 degrees so the answer is 10 degrees... Menos

10 degrees

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### Given a string like "I'm being interviewed by Amazon" implement a method that reverses the given string so that it looks like "Amazon by interviewed being I'm".

10 respuestas

we can first reverse the whole string, and then reverse the individual words O(n) complexity Menos

3-line solution in PowerShell: \$str = "I'm being interviewed by Amazon".Split() \$([array]::Reverse(\$str) ) [string]\$str Menos

" ".join("I'm being interviewed by Amazon ".split()[::-1])

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### You have a cake. How many straight cuts do you need to divide the cake into 8 equal pieces?

9 respuestas

It depends on the shape of the cake.

3 First 0 degree Second 90 degree No I have 4 have equal parts. Third From the Centre height wise. (Z-axis) Now I have 8 equal parts. Menos

With 4 straight cuts through 0, 45, 90, and 135 degrees You can cut the cake into 8 equal pieces Menos

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### How many ways that you can choose 3 desserts from a menu of 10?

7 respuestas

Just to clarify: the original reviewer's answer - C(10,3) - is indeed incorrect. More specifically, C(10,3) represents a number of ways to pick 3 DISTINCT desserts. The problem statement does not suggest that the desserts should be unique; moreover, it's very natural to order three identical desserts! I believe the correct answer to be a sum of C(10,3) /* number of ways to pick 3 distinct desserts */ + 10 * 9 /*number of ways to pick 2 matching and 1 distinct dessert */ + 10 /* number of ways to pick 3 matching desserts */ = 220 Menos

C (10, 3) = 120 - This is very simple

If order matters (it would to me if I were eating them), and repetition is allowed, the answer would be 1,000 since you can choose any of the 10 for the first, second and third dessert resulting in 10 X 10 X 10 possible dessert sequences. Menos

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7 respuestas

Because I was bored AF and the task was a complete waste of time.

do it the next day or assign it your colleague as a favor

I don't care of time when my task is infront of me because when i leave it will be hard next time Menos

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### If a change in a product made Google less money over all and even would reduce the revenue of partners but might save money for the consumers should Google still do it?

6 respuestas

&gt;&gt; seemed to want to base the answer on "doing something good for the world" as being Google's real mission. That is the right answer. If you read Google's set of values, it says there clearly - you dont have to be evil to make money. He was testing if you believe in that. Menos

Let's start with what is it we are losing and gaining If we get more users If there is a better way of doing it, a competitor is going to find it out and that as always except for very loyal customers, the herd will move to the competitor. So it makes sense for Google itself to provide this offering under "doing something good for the world" and keep the business going and creating an entry barrier to the competitor. This will ensure the users seeing as a good will. Menos