What irrational number is between 5 and 7?

An irrational number between 5 and 7 is the square root of 35 (which is = 5.9160797831.....). This number can't be expressed as terminating decimals, which means that it goes on forever.

An irrational number is an irrational number is any real number that cannot be expressed as a simple fraction or terminating decimals.