Number of people who read Kantipur or Gorkhapatra newspaper = 65
Number of people who read himalayan times newspaper = 10
Number of people who read newspaper = (65 + 10) = 75
Here, all people who read newspaper is the set of 100 people,
So, the people who did not any newspaper
= 100 - (65 + 10)
= (100 - 75)
= 25
Hence, 25 people who did not read all three newspaper.