MathCastle
Pre-AlgebraSuperchallenge

Pre-Algebra · Superchallenge problem

For exactly one single digit dd (from 00 to 99), the repeating decimal 0.d5‾0.\overline{d5} (that is, the two-digit block “d5d5” repeats forever) equals 533\dfrac{5}{33}. Find dd.

Practice more like this