Answer:To determine whether each number is in binary, octal, or decimal format, we need to understand the numeral systems:Binary (Base-2): Uses only digits 0 and 1.Octal (Base-8): Uses digits from 0 to 7.Decimal (Base-10): Uses digits from 0 to 9.Given the numbers:100 - Decimal (since it contains digits only within 0-9).659 - Decimal (contains digits 0-9).3355 - Decimal (contains digits 0-9).101 - Decimal (contains digits 0-9).798 - Decimal (contains digits 0-9).719 - Decimal (contains digits 0-9).111 - Decimal (contains digits 0-9).8372 - Decimal (contains digits 0-9).898 - Decimal (contains digits 0-9).All of the given numbers are in decimal format as they all consist of digits ranging from 0 to 9.