or
or
Solve the following problems:
Of the 200 candidates who were interviewed for a position at a call center, 100 had a two- wheeler, 70 had a credit card and 140 had a mobile phone, 40 of them had both, a two-wheeler and a credit card, 30 had both, a credit card and a mobile phone and 60 had both, a two- wheeler and mobile phone and 10 had all three. How many candidates had none of the three?
(Set)
