Saved Bookmarks
| 1. |
In a survey of 100 persons it was found that 28 read magazine A, 30 read magazine B, 42 read magazine C, 8 read magazines A and B, 10 read magazines A and C, 5 read magazines B and C and 3 read all the three magazines. Find : (i) How many read none of three magazines ? (ii) How many read magazine C only ? |
|
Answer» In a survey of 100 persons it was found that 28 read magazine A, 30 read magazine B, 42 read magazine C, 8 read magazines A and B, 10 read magazines A and C, 5 read magazines B and C and 3 read all the three magazines. Find : (i) How many read none of three magazines ? (ii) How many read magazine C only ? |
|