allery100 ആളുകളുടെ കൂട്ടത്തിൽ 60 പേർ നീന്തുന്നു, 45 പേർ സൈക്കിൾ ചവിട്ടുന്നു. 15 പേർ ഇവ രണ്ടും ചെയ്യുന്നില്ല. രണ്ടു പ്രവൃത്തികളും ചെയ്യുന്നവർ എത്ര?
A20
B25
C15
D30
Answer & Solution
Correct answer: A. 20
85 കുറഞ്ഞത് ഒന്നെങ്കിലും ചെയ്യുക, അതിനാൽ രണ്ടും = 60 + 45 - 85 = 20.
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