Probability (of choosing an odd number)=3/7
probability(a 20)=1/7
HOPE IT HELPS YOU '_'
At a certain company, 64.5% of the employees have engineering degrees.
To express the percentage as a decimal we need to remove the % symbol.
To remove % symbol we always divide by 100
When we divide by 100 we move the decimal point two places to the left.

The decimal vale of 64.5% is 0.645