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- Mathematics (MA)
4. 1 point * which of the following sets is uncountable ? (b) {2n: n e n} (a){1, 4, 9, 16, 25, . (c)all rational numbers (d) all irrational numbers. o a o b o c
4. 1 point * Which of the following sets is uncountable ? (b) {2n: n e N} (a){1, 4, 9, 16, 25, . (C)all rational numbers (d) all irrational numbers. O a O b O c Od OOption 5 1 point * 28. Let X be a subset of R and X is connected. Then Xis (a)Closed set c)An interval (b)0pen set (d)Bounded set O a O b Oc O d
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Deepak singh 1 Best Answer
in question 4 - option d is correct in question 28 - option c is correct
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Piyush pachauri
Ans is D,C In first Question : Q is countable and sets mentioned in option A,B : You can find a bijection from N to that set so these are countable. Irrationals are uncountable. For second one , we can find counter example for all options except C