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    E:\Working\Orange_Education\Math_Genius_2\Open_Files\Chap_01
                   \ 26-Sep-2025  Bharat Arora   Proof-10                                   Reader’s Sign _______________________ Date __________

                  All the numbers that can be put in pairs, that is, in groups of 2s are called even

                  numbers.
                  All the numbers that cannot be put in pairs, that is, in groups of 2s are called odd

                  numbers.
                  For example: Praveen has 8 marbles. He can

                  make pairs of these taking 2 marbles at a time.

                  No marble is left, so 8 is an even number.

                  Sid has 7 marbles. Can he make pairs of marbles

                  taking 2 marbles at a time?

                  No, 1 marble is left unpaired. So, 7 is an odd number.

                    Odd
                                  1               3              5                   7                        9

                                     An odd number has 1, 3, 5, 7 or 9 in the ones place.

                    even
                                2             4                6                     8                       10

                                     An even number has 0, 2, 4, 6 or 8 in the ones place.

                           Practice time 1G

                  1.  Circle (     ) the objects in pairs to find even and odd numbers. One has been
                       done for you.

                       (a)                                                                11 pencils           Odd

                       (b)

                       (c)

                       (d)

                  Mathematics-2                                                                                          27

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