मेरा छोटा सा निजी पुस्तकालय भाग -2 | CLASS 9 | संचयन - मेरा छोटा सा निजी पुस्तकालय | Hindi | D...

मेरा छोटा सा निजी पुस्तकालय भाग -1

In a class of 50 students, 23 speak English, 15 speak Hindi and 18 speak Punjabi. 3 speak only English and Hindi, 6 speak only Hindi and Punjabi and 6 speak only English and Punjabi. If 9 speak only English, then how many speak all the three? (a) 1 (b) 2 (c) 3 (d) 5