Question 1197329
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The solution by tutor @Boreal is correct: it gives the correct answer 

    P = {{{(1/5)*(1/4)}}} = {{{1/20}}} = 0.05 = 5%.



The "solution" by @ewatrrr is incorrect: it gives an absurdist value for the probability

    P = (5C1*4C1)/5C2 = {{{(5*4)/10}}} = {{{20/10}}} = 2.
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So, &nbsp;ignore the post by @ewatrrr, &nbsp;for the safety of your mind.