alleryസെറ്റ് A ന് 30 അംഗങ്ങളുണ്ട്, സെറ്റ് B ന് 20 അംഗങ്ങളുണ്ട്, 8 രണ്ടിനും പൊതുവായുണ്ട്. A അല്ലെങ്കിൽ B ൽ എത്ര പേരുണ്ട്?
A42
B50
C58
D38
Answer & Solution
Correct answer: A. 42
പൊതു അംഗങ്ങളെ തുകയിൽ രണ്ടുതവണ എണ്ണുന്നതിനാൽ, യൂണിയൻ 30 + 20 - 8 = 42 ആണ്.
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