Question 1145746
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<pre>
This is a binomial distribution type problem where p(x) = C(n,x)* p^x * q^(n-x)


    n is equal to 5               // number of trials
    x is equal to 4               // number of success trials
    p is the probability of success trial
    q = 1 - p
    C(n,x) = n! / (x! * (n-x)!)   // binomial coefficient


In your case  p(4) = C(5,4) * 0.4^4 * 0.6^1 = use Excel function BINOM.DIST(4, 5, 0.4, FALSE) = 0.0768.    <U>ANSWER</U>
</pre>


On Excel function BINOM.DIST, see its description everywhere, for example


https://support.office.com/en-us/article/binom-dist-function-c5ae37b6-f39c-4be2-94c2-509a1480770c