The digits after the decimal point represent tenths, hundredths, and thousandths respectively.<br><br>
In 68.412:<br>
&bull; (a) The digit in the thousandths place (third decimal place) is 2.<br>
&bull; (b) The digit 4 is in the tenths place, so its value is 4 tenths = 0.4.<br>
&bull; (c) The digit in the hundredths place (second decimal place) is 1.<br><br>
Final Answer: (a) 2, (b) 0.4, (c) 1