in a survey of a tridelta chapte with 54 member 20 were taki

in a survey of a tridelta chapte with 54 member, 20 were taking mathematics, 35 were taking English, and six were taking both. How many were not taking either subject?

Note that

N(math or english) = N(math) + N(english) - N(math and english)

Thus,

N(math or english) = 49

Thus, those who take neither is

N(neither math nor english) = N(population) - N(math or english)

= 54 - 49

= 5 [ANSWER]

in a survey of a tridelta chapte with 54 member, 20 were taking mathematics, 35 were taking English, and six were taking both. How many were not taking either s

in a survey of a tridelta chapte with 54 member 20 were taki

Solution

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