Important Questions of Sets Mathematics | Zigya

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 Multiple Choice QuestionsShort Answer Type

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21.

Match each of the set on the left in the roster form with the same set on the right described in set-builder form :

(i) {1,2, 3, 6}

(a) {x : x is a prime number and a divisor of 6}

(ii) (2, 3}

(b) {x : x is an odd natural number less than 10}

(iii) (M, A, T, H, E, I, C, S}

(c) {x : x is natural number and divisor of 6}

(iv) (1,3,5, 7, 9}

(d) {x : x is a letter of the word MATHEMATICS}

 
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22. Write the following sets in tabular form :

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#6 {main}</pre>

(b)       space space space space space space straight B space equals space open curly brackets straight x space colon space straight x space equals space left parenthesis negative 1 right parenthesis to the power of straight n space. straight n space comma space straight n space space is space straight a space natural space number comma space straight n space less or equal than 5 close curly brackets
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23.

Write the set : space space space space space open curly brackets 1 third comma 2 over 4 comma 3 over 5 comma 4 over 6 comma 5 over 7 comma 6 over 8 comma close curly brackets in the set- builder form.

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24. Which of the following are examples of null set?

Set of odd natural numbers divisible by 2.
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25. Which of the following are examples of null set?

Set of even prime numbers.
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26. Which of the following are examples of null set?

{ x : x is a natural numbers, x < 5 and x > 7 }
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27. Which of the following are examples of null set?

{ y : y is a point common to any two parallel lines}
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28.

Which of the following sets are finite or infinite?

The set of months of a year

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29. Which of the following sets are finite or infinite?

{1,2,3,..........}
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30. Which of the following sets are finite or infinite?

 {1,2,3,........,100}
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