Question 877933
{{{N=26*26*26*10*10*10}}}
{{{N=17576000}}}
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{{{N[X]=1*26*26*10*10*10}}}
{{{N[X]=6760000}}}
{{{P[X]=6760000/17576000=1/26}}} Makes sense since there are 26 letters, X is one.
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{{{N[X,9]=1*26*26*10*10*1}}}
{{{N[X,9]=67600}}}
{{{P[X,9]=67600/17576000=1/260}}}Makes sense since there are 10 digits, it is 1/10 the probability of X alone from above.