27. (10 points) convert decimal to binary or hexadecimal as required below: 98 10 9810- 16 Q8.(10 points) Fill in the blanks: 1. Logical operators AND, OR, and NOT are represented by the symbols&&. and respectively b. I d. I 2. Using the abs () function requires including the header file. a. cnumber b. iostream c. math d. cmath 3. A statement is a sequence of single statements contained between braces. a. compound b. single c. simple d. complex 4. The area in a program where a variable can be used is formally referred to as the of the variable. a. spread b. block c. reach d. scope 5. A useful modification of the if-else statement involves omitting thepart of the statement. a. expression b. endif c. else d. if