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8,648 trainee trader interview questions shared by candidates

First brain teaser: "Watermelon is 99% water. I have 100 pounds of watermelon. After a week, drying in the sun, the shrivelled watermelon had only dried down to being 98% water. What is the total weight of the watermelon now?" Second brain teaser: "Four people need to cross a rickety rope bridge to get back to their camp at night. Unfortunately, they only have one flashlight and it only has enough light left for seventeen minutes. The bridge is too dangerous to cross without a flashlight, and it’s only strong enough to support two people at any given time. Each of the campers walks at a different speed. One can cross the bridge in 1 minute, another in 2 minutes, the third in 5 minutes, and the slow poke takes 10 minutes to cross. How do the campers make it across in 17 minutes?". Different questions regarding ETFs and how hedging a position as soon as Flow Traders buys or sells an ETF. Why do you want to become a trader? Why Flow Traders?
avatar

Graduate Trader

Interviewed at Flow Traders

3.8★
Jan 13, 2021

First brain teaser: "Watermelon is 99% water. I have 100 pounds of watermelon. After a week, drying in the sun, the shrivelled watermelon had only dried down to being 98% water. What is the total weight of the watermelon now?" Second brain teaser: "Four people need to cross a rickety rope bridge to get back to their camp at night. Unfortunately, they only have one flashlight and it only has enough light left for seventeen minutes. The bridge is too dangerous to cross without a flashlight, and it’s only strong enough to support two people at any given time. Each of the campers walks at a different speed. One can cross the bridge in 1 minute, another in 2 minutes, the third in 5 minutes, and the slow poke takes 10 minutes to cross. How do the campers make it across in 17 minutes?". Different questions regarding ETFs and how hedging a position as soon as Flow Traders buys or sells an ETF. Why do you want to become a trader? Why Flow Traders?

You have 1000 bottles of water, one of which is poisoned. You have a bunch of lab rats that you can use to test the water and try to figure out which bottle is poisoned. Unfortunately, since the poison takes 24 hours to activate, and you must figure out the results in 24 hrs, you must feed all your rats now, and then wait the next day to see the results. How many rats do you have to use to figure out which bottle of water is poisoned?
avatar

Graduate Trader

Interviewed at Flow Traders

3.8★
Apr 6, 2024

You have 1000 bottles of water, one of which is poisoned. You have a bunch of lab rats that you can use to test the water and try to figure out which bottle is poisoned. Unfortunately, since the poison takes 24 hours to activate, and you must figure out the results in 24 hrs, you must feed all your rats now, and then wait the next day to see the results. How many rats do you have to use to figure out which bottle of water is poisoned?

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