MATH10120 Midterm: Math10120F14 Fall2006 Exam2F06
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An experiment consists of drawing a letter at random from the collection. U = {w, e, l, u, v, m, a, t, h}. Let e be the event a vowel is drawn and f the event a t or an h is drawn . Then f e corresponds to the event: (a) (b) {h, a, m, l, e, t} (c) {t, h, m, l, v, w} (d) {m, l, v, w} (e) {t, h} 2 an experiment has ve outcomes in its sample space, {s1, s2, s3, s4, s5}. P r(s3) = 0. 1, p r(s4) = 0. 2 then which of the following corresponds to p r(s5)? (a) 1 (b) 0. 2 (c) 0. 8 (d) 0 (e) 0. 5. 3 which of the following gives the coe cient of x3y5 in the binomial expansion of (x + y)8? (a) p (8, 3) (b) P (5, 3) (c) c(5, 3) (d) c(8, 3) (e) 1.
