Question

After asking 400 mobile holders, it was found that 300 persons use
mobile of company 'A', 150 use mobile of company 'B' and 40 uses both
A and B company mobiles. Is this data justified.​

Answer 1

Answer:

no This data is not justified because the total = 400 and the total according to the data is 300 + 150 + 40 = 490

Step-by-step explanation: