| Fast Mental Math | Probability/Statistics | Math / Brain-Teaser | Programming | Finance/Trading |
|---|---|---|---|---|
|
625
25*25
|
4
What is the expected value of coin tosses need to get heads twice?
|
3
A snail is climbing a 10 foot pole. It climbs 4 feet every day, and slides one foot every night when it sleeps. What day does it reach the top?
|
Constant, O(1)
What is the running time of array element access?
|
Chicago Merchantile Exchange - CME
This derivatives exchanged merged with the CBOT, COMEX, and NYMEX in 2008.
|
|
2491
47*53
|
7
Two players each role a six sided die. What is the expected value of the sum of the two dice roles?
|
2, 3, and 4
a^3 + b^3 + c^3 = 99
What are a, b, and c? |
Inheritance
In object-oriented programming (OOP), _________
is when an object or class is based on another object or class, using the same implementation or specifying implementation to maintain the same behavior. |
$121.20
If an index is trading at $120 per share and interest is compounded monthly at 1% per month, what should the future expiring in one month be trading at?
|
|
9212
98*94
|
0.505 = 50.5/100
I have a jar of 100 pennies, and one penny is head on both sides. I pick a penny at random and flip it. What is the probability that I get heads?
|
(N-1+M-1)!/(N-1)!/(M-1)!
A robot is at the top left corner of an NxM grid, and it can only right or down once block at a time. How many possible paths can the robot take to the bottom right corner?
|
UDP
This network layer protocol sends messages as datagrams, and the sender will not know if the receiver received the message.
|
Short 500 stock
If we buy 10 call options (1 option for 100 stock) with 50 delta each, what underlying position should we take to be delta neutral? (note - stocks have 100 delta)
|
|
916
26 * 41 - 150
|
168/2652
13*4*3/52*51 = 168/2652
What is the probability of getting two of a kind in a 5-card poker hand? (as a fraction)
|
37.5
How many degrees are between the hour and minute hand on a clock when the time is 4:15?
|
Reverses a string
|
Underlying price
Time to expiration Underlying volatility Interest rates
Strike price is one of the pricing factors in the Black-Scholes model.
What four other factors go into pricing an option? |
|
54.8
41 * 0.3 + 17 / 0.4
|
6
What is the expected number of fair coin tosses needed to get two heads in a row?
|
11
What is the smallest number that has
a remainder of 1 when divided by 2, a remainder of 2 when divided by 3, and a remainder of 3 when divided by 4? |
Shortest path from source.
If we run a bread-first search on a graph with unweighted edges,
and assign each node a number equal to one greater than its parent (with the source being assigned zero), what do these numbers represent? |
Positive
What is the gamma (positive, negative, or neutral) of a 95-105 strangle?
|
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