the four digit no. 2652 is such that any two consecutive digits from it make a multipleof 13. another no. n has this same property, is 100 digits long and begins in a 9. the last digit of n is ? pls explain how this type of Qu are solved ? 
                   

4 years ago

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Answers : (1)

                                        

such questions are solved by pure logic.


there is no set formula for them


now


which digit should come after 9


1?


right


and after 1


3


after 3?


9


after 9?


1..


so the series continues


the number is


9139139139.........upto hundred digits.


the 99th digit would 3


and hundredth? well it should be 9 right??


simple!!


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