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    b.   While designing a colour code system in a computer program, a student uses the hexadecimal
                            number system. To represent all values correctly, how many different digits and letters are used in
                            this number system?
                             (i)  8                                            (ii)  10

                            (iii)  12                                          (iv)  16

                         c.   While entering a long number into a calculator, Meena notices that the digit on the extreme right has
                            the smallest value or weight. She wants to know what this digit is called?

                             (i)  MSD                                          (ii)  LSD
                            (iii)  OSD                                         (iv)  HSD
                         d.   A student is converting decimal numbers into binary for a programming task. What is the binary
                            equivalent of the decimal number 26?
                             (i)  11010                                        (ii)  10100

                            (iii)  11100                                       (iv)  11001
                         e.   During a digital electronics lesson, a student performs binary addition. What will be the result when
                            1 is added to 1 in the binary number system?

                             (i)  0 with a carry of 1                          (ii)  1
                            (iii)  10                                          (iv)  11

                      2.  Fill in the blanks using the words from the help box.

                                                         A, F, 0, 1, Base-10, Byte, 8

                         a.  A group of eight bits is called a __________.

                         b.  The base of the octal number system is __________.

                         c.  The binary number system uses the digits __________ and __________.

                         d.  The decimal number system is also known as the __________ system.

                         e.  The hexadecimal number system includes digits 0 to 9 and letters __________ to __________.

                      3.  Write 'T' for true and 'F' for false.
                         a.  The decimal number system has a base of 16.

                         b.  The number 1010 in binary is equal to 10 in decimal.

                         c.  The digit 0 in binary represents the electronic state On.

                         d.  In binary subtraction, if 0 borrows 1, it becomes 10.

                         e.  LSD stands for Least Significant Digit.
                      4.  Answer in one or two words.

                         a.  Identify the smallest piece of data recognised by a computer.                  ____________
                         b.  Determine the number of bits in 1 nibble.                                      ____________

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