Question 768616


prime numbers between {{{60}}} and {{{90}}} are:

{{{61}}}, {{{67}}}, {{{71}}}, {{{73}}}, {{{79}}}, {{{83}}}, {{{89}}}

so, average is {{{(61+67+71+73+79+83+89)/7=523/7=74.714285^_}}}  (period 6)