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x ∈ R2 : x= t [1, 1] for all t ∈ R . To me this reads like: x is a vector in R2 such that x= t[1,1] for all t in R. So no matter the t I choose (say 1) the resultant vector ( in this case [1,1])...

In a class of 60 students, 40 students like math, 36 like sciences, 24 like both the subjects. Find the students who like a) either math or science b) neither math nor science

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