Difference between revisions of "Euc20205/Sub-Problem 1"
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| − | (a) For each positive real number x, | + | (a) For each positive real number x, define <math>f(x)</math> to be the number of prime numbers |
<math>p</math> that satisfy <math>x \le p \le x + 10</math>. What is the value of <math>f(f(20))</math>? | <math>p</math> that satisfy <math>x \le p \le x + 10</math>. What is the value of <math>f(f(20))</math>? | ||
Latest revision as of 04:24, 31 March 2023
(a) For each positive real number x, define 
to be the number of prime numbers
that satisfy 
. What is the value of 
?
