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2.  What is the another name for base 2?

                       a.  Binary number system                         b.  Hexadecimal number system

                       c.  Decimal number system                        d.  Octal number system

                    3.  In hexadecimal number system, decimal numbers from 10 to 15 are represented by ..........................

                       a.  Letters E to J                               b.  Letters H, E, X, D, E, C

                       c.  Letters U to Z                               d.  Letters A to F

                    4.  The decimal number (345)  is equivalent to ..........................
                                                10
                       a.  (101011001)                                  b.  (110111001)
                                      2                                                2
                       c.  (111011101)                                  d.  (111110001)
                                      2                                                2
                    5.  In binary addition, 0 + 1 is equal to ..........................

                       a.  0                                            b.  1

                       c.  10                                           d.  2

                 B.  Write ‘T’ for true and ‘F’ for false.

                    1.  A number system is simply a method of counting.                                   ........................

                    2.  The base of decimal number system is 8.                                           ........................
                    3.   In binary subtraction, binary number of lower value is subtracted from the binary
                       number of higher value.                                                            ........................

                    4.  The size of the Nibble is 4 bits.                                                 ........................

                    5.  The hexadecimal number system consists of 16 digits.                              ........................

                 C.  Fill in the blanks using the words given below:

                                                     Hints

                                                      Binary, 0, 8, 10, Decimal number


                    1.  In binary subtraction, 1 – 1 equals to ...................................
                    2.  The base of .................................. system is 10.

                    3.  In binary addition, 1 + 1 is equal to ...................................

                    4.  The octal number system consists of .................................. digits.

                    5.  Computer system understands .................................. numbers.
                 D.  Short answer type questions.

                    1.  What is an octal number system?
                       ....................................................................................................................................................................................



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