Binary$-$Decimal Number Conversion $(12$ marks$)$

a$.$ Convert the following decimal numbers to binary.

$88=$

$241=$

$99=$

$42=$

$169=$

$311=$

b$.$ Convert the following binary numbers to decimal.

$01011100=$

$00111100=$

$11110000=$

$10101011=$

$11001011=$

$01111101=$