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    D:\Working\TouchPad_Maths\TouchPad_Maths_1\Open_Files\Chap_03\Chap_03
                   \ 17-Nov-2025     Surender Singh Rothan   Proof-7                           Reader’s Sign _______________________ Date __________

                             Combinations of 8                                   Combinations of 9

                                     8  +                    =  8                         9  +                   =  9

                                                     +  1  =  8                                          +  1  =  9

                                                     +       =  8                                        +       =  9

                                     5  +  3  =                                           6  +  3  =

                                     4  +                    =  8                         5  +                   =  9

                                     3  +  5  =                                           4  +  5  =
                                                     +  6  =  8                                          +  6  =  9

                                     1  +  7  =                                           2  +  7  =

                                                     +       =  8                         1  +                   =  9

                       Number of combinations = 9                                                        +       =  9
                                                                          Number of combinations = 10

                Here the combinations are made using only two coloured
                apples — red and green. There is one more combination                                  Tips

                than the number itself.
                                                         We can make many combinations using more than two
                                                         coloured objects.

                            Exercise 3E

                  1.   Use two different colours to show the combinations of 10 by colouring boxes.

                                                                                      10     +    0     =    10

                                                                                       9     +     1    =    10
                                                                                             +          =

                                                                                             +          =

                                                                                             +          =

                                                                                             +          =

                                                                                             +          =
                                                                                             +          =

                                                                                             +          =

                                                                                             +          =

                                                                                             +          =

                       42        Mathematics 1

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