Trader Trainee Interview Questions | Glassdoor

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Trader trainee interview questions shared by candidates

## Top Interview Questions

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Feb 17, 2011
 Given two die, what is the probability that the sum when rolled would add up to six?5 Answers0.141/65/36Show More Responses5/36 is right.... Combinations that add up to six: 1 and 5, 2 and 4, 3 and 3, 4 and 2, 5 and 1. So we have 5 successes. There are 36 individual outcomes because there are 6 sides on each die and 6*6 = 36 So we have 5/36.Foolish young ones how sooo foolish the answer is 5/36 ... 2 die = 36 possible outcomes (5,1/4,2/ 3,3/ 2,4/ 1,5) = 5 outcomes equaling 6 5/36

Oct 24, 2011
 I give you 18 balls, of which 17 weigh the same and the last one is heavier than the rest. I also provide you a balance scale. Can you tell me the minimum number of weighs with which you can tell me which ball is the odd one?5 AnswersWeigh 6 and 6. If equal weight, then the odd ball is among the six not weighed. If one side is heavier, then the odd ball is in the heavier side....Weigh 1: Weigh 6v6 with 6 not weighed, if equal it is in 6 not weighed, if it is on the scale it is on the heavier side. Weigh 2: Weigh 2v2 with 2 not weighed, if equal it is in 2 not weighed, if it is on the scale it is on the heavier side. Weigh 3: Weigh the remaining two against each other, finding the heavier ball. Total weighs: 3, there are many ways to do this problem.Min. Weighs. is 2. 1. Weigh 8 v 8 with 2 left out. If 8 v 8 equals, 2. Weigh the 2 left out and will be able to find out the heaviest one. 3. If 8 v 8 does not equal, weigh heavier side with 3 v 3 with two left out. 4. Repeat the second step and will be able to find out.Show More ResponsesBy that logic you could say the minimum weigh is 1... Weigh two balls and if one ball is heavier you found the marble... just not logical. The question ask the minimum number of weighs that guarantees that you will find the correct ball. In the above situation if the first weigh is not equal and then the 3 by 3 is not equal you will still have to weigh a third time. The correct answer is the second answer .... 3 weighsAnswer should be 3: 18 balls, partitioned into three groups of 6. Weigh two of the groups, if scale leans towards one direction over the other, that direction's group contains heavier ball. If scale is in equilibrium, the heavier ball is in the unweighted set of 6. So, after one weigh we narrowed our sample space to 6. Now we can perform a micro-version of the same problem (using partitioned sets of 2) to get the sample space down to 2 then weigh the two balls against each other to make the heavier ball known. Note that we could also just weigh 3 v. 3 from the 6 and the direction the scale favors contains the heavier ball. Then take a random 2 balls from the set of 3, weigh them against each other and if the scale is in equilibrium, the heavier ball is the unweighted one, if not then it's the ball that the scale favors. As aforementioned, multiple ways to do this, but 3 weights is the bare minimum to guarantee finding the heaviest ball.

Sep 23, 2011
 83*37?3 Answers63*57=(60+3)*(60-3)=60^2-3^2=359183x30 + 83x7 2490 + 581 3071. Bingo(80+3)*(40-3)=3200+120-240-9=3200-120-9=3071 easy multiplies in head technique works for lots of problems like this

Mar 29, 2012
 First round mental math 2 digit multiplication question and what is decimal value of 1/6 Behavioral: Why trading? why options? what do feel about risk? biggest failure? why do you think you'll succeed? Any questions for traders. etc.1 AnswerTwo quick ways, one more accurate than the other Long division: 6 goes into 10 one time, bring down the four, 6 goes into 40 6 times, bring down the 4 and from this point you can probably see that the 6 carries on forever. Alternate method: 1/6 = (1/2) * (1/3) = 0.5 * .33333... Half of 33 is 16.5 so the answer is approximately .165 (obviously, it's .167 but it's pretty close and for other numbers this may turn out to be faster)

Oct 27, 2014
 If you have 8 teams playing in a simple bracket would you rather win 1 million dollars for getting all of the game outcomes correct or receive 10,000 for getting at least one game correct.1 AnswerSince there are seven games (0.5)^7 * 1,000,000 = (1/128) * 1,000,000 = 7812.5 is the expected value for the first option. 1 - (0.5) ^ 4 = 0.9375 * 10,000 = 9375 is the expected value for the second option. So take the second option. You have to do this in your head so you can round and estimate and still get the answer.

Nov 28, 2012
 What is 39 x 21?1 Answer819

Nov 28, 2012
 What is the angle at 3:15?1 Answer7.5 degree

Jun 7, 2011
 Do you play poker?1 AnswerAbsolutely yes - almost everyone there plays poker.