I_l [n a class of 21 students, 12 owna laptop, '10 own a tablet, and 3 D'WTl neither. The following Venn diagram shows the events \"own a laptop" and "own a tablet.\" The values p, q. r, 5 represent numbers ofstudents. Imam-p hblel a] [i] Write down the value of p. [ii] Find the value of (1, [ill] Write down the value of r and s. b] A student is selected at random from the class. [i] l.'Il'rite down the probability that this student owns a laptop. [ii] Find the probability that thls student owns a laptop or a tablet but not both. 1:] Two students are randomly selected from the class. Let L be the event a "student owns a laptop." [i] Complete the following tree diagram. Fm shutout Second student [2 marks] L L an L i , an '- L L 2i L\" _ L, (it) Write down the probability thatthe second student owns a laptop given that the rst owns a laptop