If the mode of data isk 16,15,17,15,x,19,17,14 is 15 then x =   ??

number of 14=1
number of 15=2
number of 16=1
number of 17=2
number of 19=1
mode is the number which comes the largest number of times in an arrangement . so if 15 is the mode then the 15 should come the largest number of times . 
we knew that number of times the 15 has occurred =number of times the 19 has occurred = 2
so the number of times the 15 has occurred should be greater than 2
THEREFORE x =15