CA CPT 2013 Dec Question Paper Quantitative Aptitude for online practice

Of the 200 candidates who were interviewed for a position at call center, 100 had a two wheeler, 70 hada credit card and 140 had a mobile phone. 40 of them had both a two wheeler and a credit card, 30 hadboth a credit card and mobile phone, 60 had both a two wheeler and a mobile phone and 10 had all thethree. How many candidates had none of them?