In a survey of 100 persons it is found that 42 read India Today, 30 Sunday, 28 Outlook, 10 India Today and Sunday,'5 India Today and Outlook, 8 Sunday and Outlook and 3 read all the three. How many read none of the three magazines?

There are three newspapers A, B and C. Out of 100 persons, 60read A, 50 read B, 50 read C, 30 read A and B, 20 read B and C, 30 read A and C, 10 read none. How many read all the newspapers?

In a survey of 60 men,it is found that 25 men studied the newspaper H,26 men studied the newspaper T,26 men studied the newspaper I,9 men studied the newspaper H and T,8 men studied the newspaper T and I and 3 men studied all the three newspapers.Then find (i)The no of mens who read atleast one newspaper.