Question

A stockbroker believes from his past experience and present economic conditions that "a customer will invest in tax-free bonds with a probability of 0.6, will invest in mutual funds with a probability of 0.7, and will invest in both tax-free bonds and mutual funds with probability 0.45”. At this time, what is the probability that a customer will invest in neither tax-free bonds nor mutual funds?​

Answer 1

Answer:

. If

\begin{gathered} \frac{ \sqrt{7 + \sqrt{6} } }{ \sqrt{7 - 6} } = a + b \sqrt{42} \\ \end{gathered}7−67+6=a+b42



thenthen

, then a/b =

(a) 2/11 (b) 13/2 (c) 9/2 (d) 6/7