Question

9 class probability formulas maths

Answer 1

there is only n only one formula in the whole chapter
favorable no. of outcomes/total no. of outcomes

Answer 2

    Let E be the event of dropping a catch

P(E)=  Probability of the wicketkeeper dropping a catch = \frac{6}{30} = \frac{1}{5}

Thus, Probability of not dropping a catch is 1-P(E) = 1-\frac{1}{5} = \frac{4}{5}