# Proprietary trader Interview Questions

# 92

Proprietary Trader interview questions shared by candidates### what's angle do the hands of a clock make at 1:20?

5 Answers↳

80 degrees

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80 is correct. you are 1/3 of the way through the 1 and 2. Each area represents 30 degrees. So you are 10 degrees past the 1. That's 20 left, plus the 30 in each of the areas between 2 and 3 and 3 and 4. = 80 Less

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The hands of a clock travel in a circular pattern so they cover 360 degrees on full rotation. Between each hour segment (i.e. 12 and 1) there are 30 degrees (360/12 = 30). At 1:20, the minute hand has traveled 120 degrees (30*4 = 120) which is 4/12 or 1/3 of the full rotation. This tells us that the hour hand has also traveled 1/3 of the way between 1 and 2. Since we know there are 30 degrees between 1 and 2, we can calculate that the hour hand has traveled 10 degrees from 1 to 2. This means the hour hand has traveled a total of 40 degrees past 12. Now we subtract the 40 degrees that the hour hand has traveled from the 120 degrees that the minute hand has traveled and we get 80 degrees. The angle between the hour hand and minute hand is 80 degrees. Less

### If you have 9 cans of peaches to carry back to home. But you can carry only 2 cans a time. How many rounds do you need to have all of them back to home.

2 Answers↳

5 rounds

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is there a trick here?

### A train travels a certain distance taking 7 hrs when going forward. While returning, train increases speed by 12km/hr and takes 5 hrs to return. What is the distance traveled?

1 Answers↳

x=speed 7x=(x+12)*5 7x=5x+60 2x=60 x=30km/hr 30*7 = 210km

### How many golf balls would it take to fill up a school bus?

2 Answers↳

around 1500 per square foot, and about 10x30x10=3000 cubic feet. So 4.5 million.

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How do you get 1500 golf balls per sq ft???

### You have 20 socks in a draw. 10 white and 10 black. How many socks do you have to draw to have a matching pair

1 Answers↳

3 socks at most, pretty basic to understand why

### A scientist puts a bacteria in a petri dish at exactly noon. Every minute the bacteria divides into two. At exactly 1 PM the petri dish is full. At what time was the dish half full?

1 Answers↳

12:59 PM