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Mar 30, 2010

Sep 27, 2012
 what is the angle between hour and minute hand at 10:30 how to escape a room without windows how much dust in a hole of 10*12*10 inches indexes and bond interest rates of prior day behavioral questions: who would you like to invite for dinner2 Answersshould be 135Angle Problem: The hour hand is halfway between the 10 and 11 and the minute hand is on the 6, so they are 4.5 away and there are 12 total on the clock. 4.5/12 * 360 = 30*4.5 = 45*3 = 135 degrees

### Connectivity Consultant at Convergex Group was asked...

May 23, 2012
 If the lights were turned off and you had to reach into a drawer that had 10 white socks and 10 black socks how many would you have to pull out to guarantee that you had a matching pair?3 AnswersthreeI think the correct answer is 11. Pulling out three could mean three black or three white. Pulling out 11 means, for sure, you get 10 of all the black OR white ones (since there are only 10 of either one) and 1 of the opposite ... making a pair.@Steve. A matching pair means two of the same color. When does one black and one white sock make a matching pair? If you came to work like that, I would fire you.

Dec 19, 2013
 What is the total volume of oceans in the world. 2 AnswersMake sure to consider that there is water below the continents.There are no water below continents.

Mar 10, 2013
 How many times would you write out the number 9 when writing out all numbers between 0 and 100?2 Answers209, 19, 29, 39, 49 59, 69, 79, 89 ,90, 91, 92, 93, 94, 95, 96, 97, 98, 99 (twice) = 20

### Finance - Corporate Infrastructure at Nomura Securities was asked...

Mar 23, 2010
 What do you want to do in the future? What do you see yourself doing in the future?2 AnswersI said I had interest in finance and investing, so I said that I wanted to do stuff related to IB and trading.Why not tell them you "want to do stuff related to finance and investing"?

### Quantitative Analyst at Knight Capital was asked...

Jul 20, 2012
 How much would you pay to play this game? You have a fair coin. You get heads you win \$1 and can continue to play. You get tails, you collect your winnings ans stop the game. Second question. Now what if the winnings double each time you get heads.3 Answerssimple expectation formula. For example, for 4 trows . E(Reward) = 0.5*0 + (0.5*1 + 0.5* ( 0.5 *2 + 0.5*(0.5*3 + 0.5 * 4)))) = ... The sum converges if you continue the formula, for example to 10 trows1) \$1 2) infinity (well, expectation is infinity)The fair amount to be paid for this game is the expected winnings from it. Let x be the expected winnings. Now, to calculate x, consider the first toss - With probability 1/2, we get a tail thus earning \$0. With probability 1/2, we get a head to get \$1 and make another \$x in expectation from further tosses. x = 1/2 * 0 + 1/2 * (x + 1) => x = 1 In the second scenario, if winnings double with every toss: y = 1/2 * 0 + 1/2 *( 2 * y + 1) => y = infinity (ie expectation diverges) where y is the expected winning.

### Software Developer at Knight Capital was asked...

Dec 20, 2013
 Suppose you have a stack of pancakes of pairwise distinct sizes. You wish to order the pancakes the pancakes by size, with the largest one on the bottom. The only operation is available to you is a spatula flip: You can insert a spatula anywhere in the pancake stack and flip over the stack above the spatula, reversing the order of the pancakes. For instance, in the following stack bottom . 2 3 | 5 1 4 . top Inserting the spatula between 3 and 5 will give: bottom 2 3 4 1 5 | top Design an algorithm to sort the pancake stack using this operation. Write a program to execute this algorithm in C++. What is the runtime efficiency (precisely, not just in Big-O time), assuming that a flip is an atomic operation? Is your algorithm optimal (again, precisely, not just asymptotically)?2 AnswersAs it turns out, this problem is an open question in computer science.It's tower of Hanoi .. Solvable by recursion

### Investment Banker at Nomura Securities was asked...

Oct 3, 2010
 formula wacc2 AnswersWACC = Re/(E+D) + (1-Tc)*Rd/(E+D)The previous answer is kind of confusing, so here is my attempt to clarify: WACC = (E/(E+D+P))*Re + (1-Tc)*(D/(E+D+P))*Rd + (P/(E+D+P))*Rp Where E is the market value of the firm's equity (common stock) D is the market value of the firm's debt P is the market value of the firm's preferred stock (if it has any) Tc is the corporate tax rate, because the interest paid on debt is tax-deductable WACC is also an appropriate rate at which to discount the future cash flows of the firm.

### Equity Analyst Associate at Morgan Keegan was asked...

Jul 11, 2009
 What are the three general sections of a cash flow statement2 AnswersIncome, expenses, net cash flowOperational, Financial and Investing cash flows. Also learn how to interconnect changes in the different financial statements.
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