alleryഒരു സ്കൂളിൽ, 80 വിദ്യാർത്ഥികൾ കലയും, 60 സംഗീതവും, 30 രണ്ടും എടുക്കുന്നു. ഇതിൽ എത്ര പേർ ഈ രണ്ടിൽ ഒന്നെങ്കിലും എടുക്കുന്നു?
A90
B100
C105
D110
Answer & Solution
Correct answer: D. 110
കുറഞ്ഞത് ഒന്ന് = n(കല ∪ സംഗീതം) = 80 + 60 - 30 = 110.
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