Let $E_1$ and $E_2$ be the two independent events.Such that $P(E_1)=p_1$ and $P(E_2)=p_2$.

Question

Describe in words of the events whose probabilities are: $$(i)\;p_1p_2\quad(ii)\;(1-p_1)p-2\quad(iii)\;1-(1-p_1)(1-p_2)\quad(iv)\;p_1+p_2-2p_1p_2.$$