Traditional exercises accompagning the lecture. Exercises illustrate and extend the material of the course. We try to solve exercises related to the following topics: Recaptiulating some probability theory, Forwards, Futures, and Options, Trading strategies, Arbitrage (Fundamental Theorem of Asset Pricing) Put-call parity, option price range, binomial model (Cox-Ross-Rubinstein) and extensions, option pricing, risk neutral evaluation, replicating trading strategies, Brownian motion (Wiener process), martingales, Ito's formula, change of measure (Girsanov's theorem), Black-Scholes equation, simple stochastic differential equations, implicit volatility, greeks.