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    Scratch Your Brain.                                                   21 st  Century   #Critical Thinking
                                                                                                      Skills
                           1.  Perform the conversion operations as given and write in the space given:

                               a.  (34)  into binary
                                     10
                               b.  (101010)  into decimal
                                         2
                               c.  (62)  into binary
                                     10
                               d.  (111111)  into decimal
                                         2

                           2.  Perform the binary addition and write the answer in the space given:
                               a.  (1110)  and (11)
                                                2
                                       2
                               b.  (10011)  and (100)
                                        2
                                                  2
                               c.  (101101)  and (10001) 2
                                         2
                               d. (1000)  and (111)
                                       2
                                                 2
                           3.  Competency-based/Application-based questions:

                               a.   Guess my birthdate. I’m born in 9th month of year, my date of birth is “10111” in binary and year is
                                 “11111100111” in binary.
                               b.   Riya is shopping on an online shopping website that offers a discount to customers who can solve
                                 a binary-to-decimal conversion puzzle. The website displays "1111" as the discount percentage in
                                 binary. Help Riya solve this puzzle and determine the discount percentage.

                               SDG Activity

                       You are in charge of decorating your school’s Annual Day event with a limited budget.
                       To ensure efficient use of resources, make a list of supplies with their quantities and
                       calculate the total cost. Convert the total price into binary and count the number of
                       digits. Compare whether there are more digits in the decimal or binary representation.

                     For The Teacher
                        Talk to the students about the importance of number systems and their uses in computers.
                         Do a detailed walk-through of the decimal and binary number systems and their different operations in a
                       mathematically rigorous manner.
                        Provide a brief explanation of binary in AI applications.

                                                                        Number Systems & Binary in Computing and AI     79

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