if the mode of 4,9,5,4,9,5,4,9 and x-10 is 9. find the value of x

Answer :

We have data : 4 , 9 , 5 , 4 , 9 , 5 , 4 , 9 , x  - 10
And
Mode of this given data  =  9

We know mode : The number which appears most often .

Here  4 and  9  appear three times each but our given mode is 9 , So

x -  10 = 9

x  = 19                                                                  ( Ans )