(a)[2]
Finish the table.
(b)[2]
If the score is even, determine the probability that one of the numbers he picks is 9.
Mathematics 0580 · IGCSE · Conditional probability
Conditional probability — practice question
Sachin chooses one number at random from the first three multiples of 3, then chooses one number at random from the first three prime numbers. He adds these two numbers to obtain a score. A table is displayed with multiples of 3 as $3$, $6$, $9$ and prime numbers as $2$, $3$, $5$, with some of the scores already filled in.