"A survey on a sample of 25 new cars being sold at a local auto dealer was conducted to see which of
Channel: Doubtnut
Date: 2020-04-05

"A survey on
 a sample of 25 new cars being sold at a local auto dealer was conducted to
 see which of the three popular options – air-conditioning, radio and power
 windows – were already installed.
The survey
 found:
15 had
 air-conditioning, 2 had air-conditioning and power windows but not radios, 12
 had radio, 6 had air-conditioning and radio but no power-windows, 11 had
 power-windows, 4 had radio and power windows, 3 had all three options
What is the
 number of cars that had none of the options?
(a) 1 (b) 2 (c) 3 (d) 4"