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2.  Write 'T' for true and 'F' for false.

                      a.   In a number pyramid, the number in each space is the sum of the
                         two numbers below it.


                      b.   In the number grid, each grid is replaced by the sum of
                         the numbers in it.

                  3.  Think and Answer.

                      a.  What is the process of converting a hidden message to a meaningful text?












                      b.   Your friend, Arjun, wrote BAT as TAB; then how will you write the word CAR
                         using his secret code?












                                                                                                 21 st   #Critical Thinking
                                                                                              Century   #Creativity
                  FUN ACTIVITY                                                                  Skills


                        1.  Complete the number pyramid by filling the missing spots.



















                                                   5          6         9        17













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