the possibilities are
proven flame
the possibilities are
friday rain sat rain sun no rain
friday no rain, sat rain sun rain
for the first one
P(friday rain) = 70% or 0.7, P(sat rain) = 0.7, P(sunday no rain) = 1 - P(sunday rain), so P(sunday no rain) = 1 - 0.7 = 0.3
so 0.7 x 0.7 x 0.3 = 0.147
do the same for the second one