Preferred values or E-series
Because of this, all resistors with a tolerance of 10% overlap. The series looks as follows: 1\u2013 1.2 \u2013 1.5 \u2013 1.8 \u2013 2.2 \u2013 2.7 \u2013 3.3 \u2013 3.9 \u2013 4.7 \u2013 5.6 \u2013 6.8 \u2013 8.2 \u2013 10 etc. All these values can be powers of ten (1.2\u2013 12 \u2013 120 etc).