Page 18 - Math_Genius_V1.0_C5_Flipbook
P. 18

E:\Working\Focus_Learning\Math_Genius_5_(05-10-2023)\Open_Files\CHAP_01
              \\February 16, 2024 1:27 PM   Surender Prajapati   Proof 5   Reader _________________________   Date: ___________________74





                            In the 8-digit numbers,

                            27504545 < 51889620 < 53072249 <  86121450.           C tL L tth th H t O
                                                                                  5 3 0      7   2 2 4 9         8-digit
                            So, the ascending order of the numbers is:
                                                                                  5 1 8      8   9 6 2 0         8-digit
                            983250,  27504545,  51889620, 53072249,  8 6 1                   2   1 4 5 0         8-digit
                            86121450                                              2 7 5      0   4 5 4 5         8-digit
                                                                                         9   8   3 2 5 0         6-digit
              example 5:  Arrange the following numbers in descending

                            order: 83672906, 74635618, 83910257, 9876879, 74613898

              Solution:     Let us arrange the given numbers in the place value chart.
                            Clearly,  83672906  and  83910257  both               C tL L tth th H t O
                            have same digits  at first two  extreme  left         8 3 6      7   2 9 0 6         8-digit

                            position, i.e., 8 and 3, and the digit at next        7 4 6      3   5 6 1 8         8-digit
                            position  from  the left (lakhs  place)  in  both     8 3 9      1   0 2 5 7         8-digit
                                                                                                 6 8 7 9
                                                                                      9 8
                                                                                             7
                            the numbers are 6 and 9.                              7 4 6      1   3 8 9 8         7-digit
                                                                                                                 8-digit
                            Since, 9 > 6.
                            So, 83910257 > 83672906

                            Now, in 74635618 and 74613898, both have same digits at first three extreme
                            left positions, i.e., 7, 4 and 6, and the digit at next position from the left (ten
                            thousands place) in both the numbers are 3 and 1.

                            Since, 3 > 1.

                            So, 74635618 > 74613898

                            So, the given numbers in  descending  order are: 83910257  > 83672906  >
                            74635618 > 74613898 > 9876879



                       Think and Answer
                    Write your mother's and father's date of birth in the form of ddmmyyyy and
                    compare both the numbers thus formed.



              Forming numbers

              without repetition of Digits

              With the given digits many numbers can be formed. We know the method of forming the

              smallest and the greatest numbers using the given digits.
              To form the smallest number by the given digits, write the smallest digit other than zero

              (0) at the leftmost place and  then  write  zero  (0) if given, otherwise write other digits  in
              their ascending order.


              16                                                                                    Mathematics-5
   13   14   15   16   17   18   19   20   21   22   23