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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

Let A = Set of months of a year

Its roster form is

A = { Jan, Feb, March, Apr, May, June, July, Aug, Sep, Oct, Nov, Dec}

The number of elements in A is finite.

$rightwards double arrow$ Set A is a finite set.

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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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(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}

Previous Year Papers

Test Series

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Sets

Short Answer Type

28.
Which of the following sets are finite or infinite?

The set of months of a year

Previous Year Papers

Test Series

Test Yourself

Short Answer Type

28. Which of the following sets are finite or infinite?The set of months of a year

28.
Which of the following sets are finite or infinite?

The set of months of a year