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    21 st
                    Building numBers                                                                  Century   #Critical Thinking
                                                                                                       skills
                    Anupam has some digit cards. He picked 4 cards randomly which are as follows.

                    How should he arrange these digits to make the greatest number?

                    To form the greatest number, write the greatest digit first i.e. 7, then write the next
                    greater number and so on. So, the biggest number made by Anupam will be 7520.

                    Now to form the smallest number, write the smallest digit first and so on.

                    So, the smallest number Anupam will make is 0257

                    If we put 0 in the thousands place, it forms a 3-digit number.

                    Therefore, the second smallest digit should be placed first followed by 0 (zero) and
                    then the remaining digits in ascending order.

                    Then, the correct smallest number will be 2057.

                    Now, let us create as many numbers as possible using the digits, 4, 3, 1, 8.

                               __________               __________               __________                __________

                    Which is the greatest among the numbers you have created?  __________

                    Which is the smallest among the numbers you have created?  __________

                                Exercise 1E

                        1.  Form the smallest and the greatest numbers using each of the given digits.

                                            digits                  smallest number                greatest number

                           a.              3, 4, 9, 1

                           b.              7, 9, 2, 8

                           c.              5, 0, 1, 2

                           d.              2, 0, 4, 9

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