# Quantitative Analyst Interview Questions

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### Quantitative Analyst at Jane Street

May 14, 2011
 “You have 2 decks of cards (each deck contains both red and black cards). One deck has twice the number of cards in the other deck with the same color ration (so one deck has 52 cards and the other...”

### Quantitative Analyst at Morgan Stanley

Dec 19, 2010
 “The price of a stock is \$10 now. It has .6 prob. increasing to 12 and .4 prob. going down to 8. Interest rate is 0. What's the value of a call option with strike \$10?”

### Quantitative Analyst at Citi

Oct 4, 2010
 “how many combinations that have at least one five from zero to 1000”

### Quantitative Compensation Analyst at Google

Aug 24, 2009
 “What is the probability of breaking a stick into 3 pieces and forming a triangle?”

### Quantitative Analyst at Morgan Stanley

Feb 22, 2011
 “From (0,0,0) to (3,3,3) in 3D space how many paths are there if we move only right, forward or up?”

### Quantitative Analyst at Jane Street

Feb 1, 2011
 “2. In an urn you have red and blue balls (same number of balls in each of the two colors). You extract 3 balls what is the probability that the number of balls you have extracted is odd. Now you...”

### Quantitative Analyst at D. E. Shaw & Co. - Investment Firm

Feb 12, 2012
 “If 3 of my friends have phone numbers ending (last four digits) in some permutation of 0,1,4, and 9 and I have 150 friends, then is that just a chance occurance?”

### Quantitative Analyst at Morgan Stanley

Feb 22, 2011
 “66 handshakes occur at a party how many people at a party if everyone shakes hands with everyone else.”

Nov 11, 2011